Merge pull request #532 from codexmas/ServoEndstops

Fix for ugly code compilation errors in SERVO_ENDSTOP checks

Marlin/Marlin_main.cpp

       0) {
 
     // Engage Servo endstop if enabled
-    #ifdef SERVO_ENDSTOPS[axis] > -1
-      servos[servo_endstops[axis]].write(servo_endstop_angles[axis * 2]);
+    #ifdef SERVO_ENDSTOPS
+      if (SERVO_ENDSTOPS[axis] > -1) {
+        servos[servo_endstops[axis]].write(servo_endstop_angles[axis * 2]);
+      }
     #endif
-
+      
     current_position[axis] = 0;
     plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]);
     destination[axis] = 1.5 * max_length(axis) * home_dir(axis);
     endstops_hit_on_purpose();
 
     // Retract Servo endstop if enabled
-    #ifdef SERVO_ENDSTOPS[axis] > -1
-      servos[servo_endstops[axis]].write(servo_endstop_angles[axis * 2 + 1]);
+    #ifdef SERVO_ENDSTOPS
+      if (SERVO_ENDSTOPS[axis] > -1) {
+        servos[servo_endstops[axis]].write(servo_endstop_angles[axis * 2 + 1]);
+      }
     #endif
   }
 }