call _exit instead of abort in release mode

Avoids cores being created, as they're nowadays often piped
to some call home system

external/easylogging++/easylogging++.cc

@@ -17,6 +17,8 @@
 #define EASYLOGGING_CC
 #include "easylogging++.h"
 
+#include <unistd.h>
+
 #if defined(AUTO_INITIALIZE_EASYLOGGINGPP)
 INITIALIZE_EASYLOGGINGPP
 #endif
@@ -35,8 +37,12 @@ static void abort(int status, const std::string& reason) {
 #if defined(ELPP_COMPILER_MSVC) && defined(_M_IX86) && defined(_DEBUG)
   // Ignore msvc critical error dialog - break instead (on debug mode)
   _asm int 3
+#else
+#ifdef NDEBUG
+  ::_exit(1);
 #else
   ::abort();
+#endif
 #endif  // defined(ELPP_COMPILER_MSVC) && defined(_M_IX86) && defined(_DEBUG)
 }