Fix remaining string format errors

(cherry picked from commit b8dc3f5795)

kbarcode/pixmapbarcode.cpp

@@ -178,7 +178,7 @@ bool PixmapBarcode::createPixmap( TQPixmap* target, int resx, int resy )
         cmd += input->name();
 	cmd += " -sNOPAUSE -q - -c showpage quit";
 	
-        qDebug("cmd: " + cmd );
+        qDebug("cmd: %s", cmd.ascii() );
 	gs_pipe = popen( cmd.latin1(), "w" );
         if( !gs_pipe )
 	{

kbarcode/tbarcode2.cpp

@@ -122,7 +122,7 @@ bool TBarcode2::createPostscript( char** postscript, long* postscript_size )
                        tbarcode->height(),
                        tbarcode->checksum() );
 
-    qDebug( "Cmd = " + cmd );
+    qDebug( "Cmd = %s", cmd.ascii() );
     if( !readFromPipe( cmd.latin1(), postscript, postscript_size ) )
         return false;