an extra keypress was being generated for semicolon, equals, comma, period, slash

it now checks to makes it isn't one of these keys
alos, the subtract key is it's very own special key and is handled separately
b=44189, r=brade

widget/src/windows/nsWindow.cpp

@@ -2171,6 +2171,9 @@ BOOL nsWindow::OnKeyDown( UINT aVirtualKeyCode, UINT aScanCode)
   {
     DispatchKeyEvent(NS_KEY_PRESS, 0, aVirtualKeyCode);
   } 
+  else if (mIsControlDown && aVirtualKeyCode == NS_VK_SUBTRACT) {
+    DispatchKeyEvent(NS_KEY_PRESS, aVirtualKeyCode-64, 0);
+  }
   else if (mIsControlDown && 
            ((( NS_VK_0 <= aVirtualKeyCode) && (aVirtualKeyCode <= NS_VK_9)) ||
             (aVirtualKeyCode == NS_VK_SEMICOLON) ||
@@ -2184,7 +2187,12 @@ BOOL nsWindow::OnKeyDown( UINT aVirtualKeyCode, UINT aScanCode)
     // put the 0 - 9 in charcode instead of keycode.
     DispatchKeyEvent(NS_KEY_PRESS, aVirtualKeyCode, 0);
   }
-  else if (NO_WM_CHAR_LATER(aVirtualKeyCode)) 
+  else if (NO_WM_CHAR_LATER(aVirtualKeyCode) &&  
+            (aVirtualKeyCode != NS_VK_SEMICOLON)  &&
+            (aVirtualKeyCode != NS_VK_EQUALS)  &&
+            (aVirtualKeyCode != NS_VK_COMMA)  &&
+            (aVirtualKeyCode != NS_VK_PERIOD)  &&
+            (aVirtualKeyCode != NS_VK_SLASH))
   {
     DispatchKeyEvent(NS_KEY_PRESS, 0, aVirtualKeyCode);
   }