resize_utils.cpp: return config.h

It is required in CentOS 7 the macro HAVE_OPENCV2_OPENCV_HPP to be
defined.

Author: MartinPulec

src/capture_filter/resize_utils.cpp

@@ -45,6 +45,10 @@
  *
  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <cstdlib>
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wcast-align"