Fix qt warnings when trying to show raster marker with unknown size and missing images

nyalldawson · nyalldawson · commit 5d0ce3652ee9 · 2023-03-03T16:20:56.000+10:00
diff --git a/src/core/qgsimagecache.cpp b/src/core/qgsimagecache.cpp
@@ -400,7 +400,7 @@ QImage QgsImageCache::renderImage( const QString &path, QSize size, const bool k
       isBroken = true;
 
       // if the size parameter is not valid, skip drawing of missing image symbol
-      if ( !size.isValid() )
+      if ( !size.isValid() || size.isNull() )
         return im;
 
       // if image size is set to respect aspect ratio, correct for broken image aspect ratio
