Rename: 'guard' is too generic and not clear enough within its context

src/TerminalCharacterDecoder.cpp

@@ -96,13 +96,13 @@ void PlainTextDecoder::decodeLine(const Character* const characters, int count,
     }
 
     // find out the last technically real character in the line
-    int guard = -1;
+    int realCharacterGuard = -1;
     for (int i = count - 1 ; i >= 0 ; i--) {
         // FIXME: the special case of '\n' here is really ugly
         // Maybe the '\n' should be added after calling this method in
         // Screen::copyLineToStream()
         if (characters[i].isRealCharacter && characters[i].character != '\n') {
-            guard = i;
+            realCharacterGuard = i;
             break;
         }
     }
@@ -124,7 +124,7 @@ void PlainTextDecoder::decodeLine(const Character* const characters, int count,
             // This feels tricky, but otherwise leading "whitespaces" may be
             // lost in some situation. One typical example is copying the result
             // of `dialog --infobox "qwe" 10 10` .
-            if (characters[i].isRealCharacter || i <= guard) {
+            if (characters[i].isRealCharacter || i <= realCharacterGuard) {
                 plainText.append(QChar(characters[i].character));
                 i += qMax(1, konsole_wcwidth(characters[i].character));
             } else {