Merge pull request #362 from JLLeitschuh/fix/desaturateFeedsBackIntoPreviousStep

Fixes Desaturate Feeding back into the previous step

Author: ThomasJClark

core/src/main/java/edu/wpi/grip/core/operations/composite/DesaturateOperation.java

@@ -54,7 +54,7 @@ public void perform(InputSocket<?>[] inputs, OutputSocket<?>[] outputs) {
         switch (input.channels()) {
             case 1:
                 // If the input is already one channel, it's already desaturated
-                output = input;
+                input.copyTo(output);
                 break;
 
             case 3: