Fix non-OpenMP build

rtengine/dfmanager.cc

@@ -219,10 +219,14 @@ void dfInfo::updateBadPixelList( RawImage *df )
     if( df->getSensorType() == ST_BAYER || df->getSensorType() == ST_FUJI_XTRANS ) {
         std::vector<badPix> badPixelsTemp;
 
+#ifdef _OPENMP
         #pragma omp parallel
+#endif
         {
             std::vector<badPix> badPixelsThread;
+#ifdef _OPENMP
             #pragma omp for nowait
+#endif
 
             for( int row = 2; row < df->get_height() - 2; row++)
                 for( int col = 2; col < df->get_width() - 2; col++) {
@@ -235,7 +239,9 @@ void dfInfo::updateBadPixelList( RawImage *df )
                     }
                 }
 
+#ifdef _OPENMP
             #pragma omp critical
+#endif
             badPixelsTemp.insert(badPixelsTemp.end(), badPixelsThread.begin(), badPixelsThread.end());
         }
         badPixels.insert(badPixels.end(), badPixelsTemp.begin(), badPixelsTemp.end());