[LyX/master] Extend comment and remove superfluous parentheses.

[Juergen Spitzmueller]

commit 853283ca875f97e53eb84a718cb55fa0075d8350
Author: Juergen Spitzmueller <sp...@lyx.org>
Date:   Sat May 16 19:18:51 2015 +0200

    Extend comment and remove superfluous parentheses.

diff --git a/src/frontends/qt4/GuiApplication.cpp 
b/src/frontends/qt4/GuiApplication.cpp
index 2fa6a71..6640ce3 100644
--- a/src/frontends/qt4/GuiApplication.cpp
+++ b/src/frontends/qt4/GuiApplication.cpp
@@ -2142,10 +2142,10 @@ void GuiApplication::processKeySym(KeySymbol const & 
keysym, KeyModifier state)
                        // If a non-Shift Modifier is used we have a non-bound 
key sequence
                        // (such as Alt+j = j). This should be omitted (#5575).
                        // FIXME: On Windows, the AltModifier and ShiftModifer 
is also
-                       // set when AltGr is pressed. Therefore, the check 
below does not work
-                       // (see #5575 for details).
+                       // set when AltGr is pressed. Therefore, the check 
below cannot be used
+                       // since it breaks AltGr-bound symbols (see #5575 for 
details).
 #if !defined(_WIN32)
-                       if ((state & AltModifier || state & ControlModifier || 
state & MetaModifier)) {
+                       if (state & AltModifier || state & ControlModifier || 
state & MetaModifier) {
                                current_view_->message(_("Unknown function."));
                                current_view_->restartCursor();
                                return;