Fix 'format not a string literal' error

src/barcode/barcode.cpp

@@ -172,14 +172,14 @@ void barcodeRecognitionThread::printArray( int array[10][13][2], int level )
   for (int i = 0; i < 10; i++) {
     TQCString temp;
     temp.setNum( i );
-    fprintf( stderr, temp + " :   " );
+    fprintf( stderr, "%s :   ", *(temp) );
     for (int j = 0; j < 13; j++) {
       if (array[i][j][level] == -1)
         fprintf( stderr, "x  " );
       else {
         TQCString temp;
         temp.setNum( array[i][j][level] );
-        fprintf( stderr, temp + "  " );
+        fprintf( stderr, "%s  ", *(temp) );
       }
     }
     fprintf( stderr, "\n" );