Initialize all members in Interval constructor.

Sandro Santilli · Sandro Santilli · commit bd00b0f3f618 · 2012-12-14T18:24:56.000+01:00
Fixes memory conditional jumps depending on uninitialized values and as a consequence the unstable results from qgis_expressiontest Closes #6877
diff --git a/src/core/qgsexpression.h b/src/core/qgsexpression.h
@@ -358,7 +358,7 @@ class CORE_EXPORT QgsExpression
         static const int HOUR = 60 * 60;
         static const int MINUTE = 60;
       public:
-        Interval( double seconds = 0 ) { mSeconds = seconds; }
+        Interval( double seconds = 0 ): mSeconds(seconds), mValid(true) { }
         ~Interval();
         double years() { return mSeconds / YEARS;}
         double months() { return mSeconds / MONTHS; }
