Make the hotkey window go all the way off the screen. It was incorrectly using...

Make the hotkey window go all the way off the screen. It was incorrectly using the screen's visible frame to compute its offscreen position. Fixes bug 2638

iTermController.m

@@ -1555,7 +1555,7 @@ static void RollOutHotkeyTerm(PseudoTerminal* term, BOOL itermWasActiveWhenHotke
             break;
         case WINDOW_TYPE_BOTTOM:
-            rect.origin.y = screenFrame.origin.y-rect.size.height;
+            rect.origin.y = screenFrame.origin.y - rect.size.height;
             [[NSAnimationContext currentContext] setDuration:[[PreferencePanel sharedInstance] hotkeyTermAnimationDuration]];
             [[[term window] animator] setFrame:rect display:YES];
             [[[term window] animator] setAlphaValue:0];