Fix uninitialized variables

This fixes most of clang analyzer warnings about uninitialized variables
in ctors

Change-Id: I879c785594307ed3fe7140588338a6b2a1e4db65
Reviewed-by: Denis Shienkov <denis.shienkov@gmail.com>
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

3 files changed, 14 insertions, 22 deletions

diff --git a/src/plugins/scanner/cpp/Lexer.h b/src/plugins/scanner/cpp/Lexer.h
index 2b843a14a..1cf829ebb 100644
--- a/src/plugins/scanner/cpp/Lexer.h
+++ b/src/plugins/scanner/cpp/Lexer.h
@@ -145,17 +145,17 @@ private:
         unsigned _objCEnabled: 1;
     };
 
-    const char *_firstChar;
-    const char *_currentChar;
-    const char *_lastChar;
-    const char *_tokenStart;
-    unsigned char _yychar;
-    int _state;
+    const char *_firstChar = nullptr;
+    const char *_currentChar = nullptr;
+    const char *_lastChar = nullptr;
+    const char *_tokenStart = nullptr;
+    unsigned char _yychar = 0;
+    int _state = 0;
     union {
         unsigned _flags;
         Flags f;
     };
-    unsigned _currentLine;
+    unsigned _currentLine = 0;
 };
 
 } // end of namespace CPlusPlus
diff --git a/src/plugins/scanner/cpp/Token.h b/src/plugins/scanner/cpp/Token.h
index 286c71a48..846aa5a12 100644
--- a/src/plugins/scanner/cpp/Token.h
+++ b/src/plugins/scanner/cpp/Token.h
@@ -353,7 +353,7 @@ public:
         Flags f;
     };
 
-    unsigned offset;
+    unsigned offset = 0;
 
     union {
         void *ptr;
diff --git a/src/plugins/scanner/qt/qtscanner.cpp b/src/plugins/scanner/qt/qtscanner.cpp
index 51faadab3..40d062e1f 100644
--- a/src/plugins/scanner/qt/qtscanner.cpp
+++ b/src/plugins/scanner/qt/qtscanner.cpp
@@ -68,24 +68,16 @@
 struct OpaqQrc
 {
 #ifdef Q_OS_UNIX
-    int fd;
-    int mapl;
+    int fd = 0;
+    int mapl = 0;
 #else
-    QFile *file;
+    QFile *file = nullptr;
 #endif
 
-    char *map;
-    QXmlStreamReader *xml;
+    char *map = nullptr;
+    QXmlStreamReader *xml = nullptr;
     QByteArray current;
-    OpaqQrc()
-#ifdef Q_OS_UNIX
-        : fd (0),
-#else
-        : file(nullptr),
-#endif
-          map(nullptr),
-          xml(nullptr)
-    {}
+    OpaqQrc() = default;
 
     ~OpaqQrc()
     {