Cmb: Workaround for gcc 4.7 bug

The default constructor has no noexcept specifier for gcc 4.7

Change-Id: If204c19e21bc368d755c8d6508fd490f71be6f6c
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

src/tools/codemodelbackend/ipcsource/translationunitparseerrorexception.h

@@ -47,6 +47,12 @@ public:
 
     const char *what() const Q_DECL_NOEXCEPT override;
 
+#ifdef __GNUC__
+#  if !__GNUC_PREREQ(4,8)
+    ~TranslationUnitParseErrorException() noexcept {}
+#  endif
+#endif
+
 private:
     Utf8String filePath_;
     Utf8String projectPartId_;