check file descriptor

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7261 818b1a75-f10b-46b9-bf7c-635c3b92a50f

common/utils/msc/msc.c

@@ -295,6 +295,7 @@ void msc_log_declare_proto(
   uint64_t local_msc_event_counter = msc_event_counter;
   msc_event_counter++;
   if ((protoP >= MIN_MSC_PROTOS) && (protoP < MAX_MSC_PROTOS)) {
+    if (msc_fd[protoP] != NULL) {
       rv = fprintf(msc_fd[protoP], "%"PRIu64" [PROTO] %d %s\n", local_msc_event_counter, protoP, &msc_proto2str[protoP][0]);
       if (rv < 0) {
         fprintf(stderr, "Error while declaring new protocol in MSC log file: %s", strerror(errno));
@@ -304,6 +305,7 @@ void msc_log_declare_proto(
         fprintf(stderr, "Error while flushing stream of MSC log file: %s", strerror(errno));
       }
     }
+  }
 }
 //------------------------------------------------------------------------------
 void msc_log_event(
@@ -320,7 +322,7 @@ void msc_log_event(
   if ((protoP < MIN_MSC_PROTOS) || (protoP >= MAX_MSC_PROTOS)) {
       return;
   }
-  if (msc_fd != NULL) {
+  if (msc_fd[protoP] != NULL) {
       rv = fprintf(msc_fd[protoP], "%"PRIu64" [EVENT] %d ", local_msc_event_counter, protoP);
       if (rv < 0) {
          fprintf(stderr, "Error while logging MSC event : %s", &msc_proto2str[protoP][0]);