Merge pull request #948 from federicobond/cclabelttf-fix

Use autorelease CCRenderState method in CCLabelTTF

Author: slembcke

cocos2d/CCLabelTTF.m

@@ -337,7 +337,7 @@ -(CCRenderState *)renderState
 		BOOL copyUniforms = self.hasDefaultShaderUniforms;
 
 		// Create an uncached renderstate so the texture can be released before the renderstate cache is flushed.
-		_renderState = [[CCRenderState alloc] initWithBlendMode:_blendMode shader:_shader shaderUniforms:self.shaderUniforms copyUniforms:copyUniforms];
+		_renderState = [CCRenderState renderStateWithBlendMode:_blendMode shader:_shader shaderUniforms:self.shaderUniforms copyUniforms:copyUniforms];
 	}
 
 	return _renderState;