Revert "Left shift key equivalent modifier mask in xib unarchiver (#259…

…)" (#260)

This reverts commit d1562a3.

Source/GSXib5KeyedUnarchiver.m

@@ -1395,7 +1395,7 @@ - (id) decodeModifierMaskForElement: (GSXibElement*)element
         // Seems that Apple decided to omit this attribute IF certain default keys alone
         // are applied.  If this key is present WITH NO setting then the following is
         // used for the modifier mask...
-        object = [NSNumber numberWithUnsignedInt: (NSCommandKeyMask << 8)];
+        object = [NSNumber numberWithUnsignedInt: NSCommandKeyMask];
       }
     }
   else
@@ -1437,8 +1437,6 @@ - (id) decodeModifierMaskForElement: (GSXibElement*)element
           mask |= NSFunctionKeyMask;
         }
 
-      //This mask is left shifted 8 bits when encoded. When this is used to initialize the element, the mask will be shifted back to the right by 8 bits.
-      mask = (mask << 8);
       object = [NSNumber numberWithUnsignedInt: mask];
     }