mesa: Simplify a bit of _mesa_add_state_reference using memcmp.

src/mesa/program/prog_parameter.c

@@ -378,18 +378,9 @@ _mesa_add_state_reference(struct gl_program_parameter_list *paramList,
 
    /* Check if the state reference is already in the list */
    for (index = 0; index < (GLint) paramList->NumParameters; index++) {
-      GLuint i, match = 0;
-      for (i = 0; i < STATE_LENGTH; i++) {
-         if (paramList->Parameters[index].StateIndexes[i] == stateTokens[i]) {
-            match++;
-         }
-         else {
-            break;
-         }
-      }
-      if (match == STATE_LENGTH) {
-         /* this state reference is already in the parameter list */
-         return index;
+      if (!memcmp(paramList->Parameters[index].StateIndexes,
+		  stateTokens, STATE_LENGTH * sizeof(gl_state_index))) {
+	 return index;
       }
    }