QLoggingRegistry: don't iterate over QHash::keys()

... but use the new key_iterators instead.

Saves creating a temporary QList just to iterate over it
and ~1.3KiB in text size on optimized GCC 4.9 Linux AMD64
builds.

Change-Id: Id5223fc5fcb4a4e7c012718c1bb2674b8ea0439d
Reviewed-by: Sérgio Martins <iamsergio@gmail.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/src/corelib/io/qloggingregistry.cpp b/src/corelib/io/qloggingregistry.cpp
index b53e251102..a12eab5a87 100644
--- a/src/corelib/io/qloggingregistry.cpp
+++ b/src/corelib/io/qloggingregistry.cpp
@@ -364,8 +364,8 @@ void QLoggingRegistry::updateRules()
 
     rules = qtConfigRules + configRules + apiRules + envRules;
 
-    foreach (QLoggingCategory *cat, categories.keys())
-        (*categoryFilter)(cat);
+    for (auto it = categories.keyBegin(), end = categories.keyEnd(); it != end; ++it)
+        (*categoryFilter)(*it);
 }
 
 /*!
@@ -383,8 +383,8 @@ QLoggingRegistry::installFilter(QLoggingCategory::CategoryFilter filter)
     QLoggingCategory::CategoryFilter old = categoryFilter;
     categoryFilter = filter;
 
-    foreach (QLoggingCategory *cat, categories.keys())
-        (*categoryFilter)(cat);
+    for (auto it = categories.keyBegin(), end = categories.keyEnd(); it != end; ++it)
+        (*categoryFilter)(*it);
 
     return old;
 }