WebGLRenderer: Check if shadowMap is enabled before refreshing uniforms. Fixes #7365.

src/renderers/WebGLRenderer.js

@@ -1727,9 +1727,13 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 			}
 
-			if ( object.receiveShadow && ! material._shadowPass ) {
+			if ( _this.shadowMap.enabled ) {
 
-				refreshUniformsShadow( m_uniforms, lights, camera );
+				if ( object.receiveShadow && ! material._shadowPass ) {
+
+					refreshUniformsShadow( m_uniforms, lights, camera );
+
+				}
 
 			}