- Coverity issues 939, 940, 941:

Event uninit_use_in_call: Using uninitialized value "tag" in call to
   function "(ompi_dpm).connect_accept" and others
   The tag is set and used in get_rport only on root...

This commit was SVN r17972.

ompi/mpi/c/comm_accept.c

@@ -42,7 +42,7 @@ int MPI_Comm_accept(char *port_name, MPI_Info info, int root,
     bool send_first=false; /* we receive first */
     ompi_communicator_t *newcomp=MPI_COMM_NULL;
     char *tmp_port=NULL;
-    orte_rml_tag_t tag;
+    orte_rml_tag_t tag = 0;  /* tag is set & used in get_rport only at root; silence coverity */
 
     MEMCHECKER(
         memchecker_comm(comm);

ompi/mpi/c/comm_connect.c

@@ -47,7 +47,7 @@ int MPI_Comm_connect(char *port_name, MPI_Info info, int root,
     ompi_communicator_t *newcomp=MPI_COMM_NULL;
     orte_process_name_t port_proc_name;
     char *tmp_port=NULL;
-    orte_rml_tag_t tag;
+    orte_rml_tag_t tag = 0;  /* tag is set & used in get_rport only at root; silence coverity */
 
     MEMCHECKER(
         memchecker_comm(comm);

ompi/mpi/c/comm_spawn.c

@@ -45,7 +45,7 @@ int MPI_Comm_spawn(char *command, char **argv, int maxprocs, MPI_Info info,
     ompi_communicator_t *newcomp=NULL;
     char port_name[MPI_MAX_PORT_NAME];
     char *tmp_port;
-    orte_rml_tag_t tag;
+    orte_rml_tag_t tag = 0;  /* tag is set & used in get_rport only at root; silence coverity */
     bool non_mpi = false;
     
     MEMCHECKER(