Remove unused variables in src/quick

Clang 15 started to give me -Wunused-but-set-variable on Ubuntu. I
suspect this is due to my local update (which could have included the
compiler as well). The following pattern (rightly) detected as "unused":

int foo = 0; // declaration
// ...
++foo; // usage, but in fact, this is just "an update of a definition"
// ... - foo is never used in any other expression, so warn

Specific messages:

qtdeclarative/src/quick/items/qquickwindow.cpp:2036:13: error: variable 'removed' set but not used [-Werror,-Wunused-but-set-variable]
        int removed = 0;
            ^
qtdeclarative/src/quick/items/qquickwindow.cpp:2035:13: error: variable 'added' set but not used [-Werror,-Wunused-but-set-variable]
        int added = 0;
            ^
qtdeclarative/src/quick/items/qquickwindow.cpp:2037:13: error: variable 'replaced' set but not used [-Werror,-Wunused-but-set-variable]
        int replaced = 0;
            ^

qtdeclarative/src/quick/scenegraph/qsgdistancefieldglyphnode.cpp:324:9: error: variable 'subnodeCount' set but not used [-Werror,-Wunused-but-set-variable]
    int subnodeCount = 0;
        ^

Change-Id: I2a4d294a2527cee98f4e882050dc160efd04501e
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
(cherry picked from commit 55e35adc052f3021e2921b36a9fd10b9a6248e1b)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

2 files changed, 0 insertions, 8 deletions

diff --git a/src/quick/items/qquickwindow.cpp b/src/quick/items/qquickwindow.cpp
index a7af1d7119..7c16d7e770 100644
--- a/src/quick/items/qquickwindow.cpp
+++ b/src/quick/items/qquickwindow.cpp
@@ -2054,9 +2054,6 @@ void QQuickWindowPrivate::updateDirtyNode(QQuickItem *item)
         // desired list is shorter.
         QSGNode *groupNode = itemPriv->childContainerNode();
         QSGNode *currentNode = groupNode->firstChild();
-        int added = 0;
-        int removed = 0;
-        int replaced = 0;
         QSGNode *desiredNode = nullptr;
 
         while (currentNode && (desiredNode = fetchNextNode(itemPriv, ii, fetchedPaintNode))) {
@@ -2069,7 +2066,6 @@ void QQuickWindowPrivate::updateDirtyNode(QQuickItem *item)
                     desiredNode->parent()->removeChildNode(desiredNode);
                 groupNode->insertChildNodeAfter(desiredNode, currentNode);
                 groupNode->removeChildNode(currentNode);
-                replaced++;
 
                 // since we just replaced currentNode, we also need to reset
                 // the pointer.
@@ -2088,7 +2084,6 @@ void QQuickWindowPrivate::updateDirtyNode(QQuickItem *item)
                 if (desiredNode->parent())
                     desiredNode->parent()->removeChildNode(desiredNode);
                 groupNode->appendChildNode(desiredNode);
-                added++;
             }
         } else if (currentNode) {
             // on the other hand, if we processed less than our current node
@@ -2098,7 +2093,6 @@ void QQuickWindowPrivate::updateDirtyNode(QQuickItem *item)
                 QSGNode *node = currentNode->nextSibling();
                 groupNode->removeChildNode(currentNode);
                 currentNode = node;
-                removed++;
             }
         }
     }
diff --git a/src/quick/scenegraph/qsgdistancefieldglyphnode.cpp b/src/quick/scenegraph/qsgdistancefieldglyphnode.cpp
index 39012ba252..4c6589d1f9 100644
--- a/src/quick/scenegraph/qsgdistancefieldglyphnode.cpp
+++ b/src/quick/scenegraph/qsgdistancefieldglyphnode.cpp
@@ -317,7 +317,6 @@ void QSGDistanceFieldGlyphNode::updateGeometry()
         ip.append(o + 0);
     }
 
-    int subnodeCount = 0;
     if (m_glyphNodeType == SubGlyphNode) {
         Q_ASSERT(m_glyphsInOtherTextures.isEmpty());
     } else {
@@ -342,7 +341,6 @@ void QSGDistanceFieldGlyphNode::updateGeometry()
                 subNode->update();
                 subNode->updateGeometry(); // we have to explicitly call this now as preprocess won't be called before it's rendered
                 appendChildNode(subNode);
-                ++subnodeCount;
             }
             ++ite;
         }