Round calculated label sizes up to prevent strings with certain fonts from not rendering

Author: SRandazzo

cocos2d/CCLabelTTF.m

@@ -528,6 +528,9 @@ - (CCTexture*) createTextureWithAttributedString:(NSAttributedString*)attributed
         dimensions = [attributedString boundingRectWithSize:NSSizeFromCGSize(dimensions) options:NSStringDrawingUsesLineFragmentOrigin].size;
 #endif
 
+        dimensions.width = ceil(dimensions.width);
+        dimensions.height = ceil(dimensions.height);
+        
         wDrawArea = dimensions.width;
         hDrawArea = dimensions.height;