Initialize all Image members.

Source/Urho3D/Resource/Image.cpp

@@ -243,9 +243,11 @@ Image::Image(Context* context) :
     height_(0),
     depth_(0),
     components_(0),
+    numCompressedLevels_(0),
     cubemap_(false),
     array_(false),
-    sRGB_(false)
+    sRGB_(false),
+    compressedFormat_(CF_NONE)
 {
 }
 

Source/Urho3D/Resource/Image.h

@@ -53,6 +53,7 @@ struct CompressedLevel
     /// Construct empty.
     CompressedLevel() :
         data_(0),
+        format_(CF_NONE),
         width_(0),
         height_(0),
         depth_(0),