Close the file descriptor

This commit was SVN r24580.

orte/mca/ras/tm/ras_tm_module.c

@@ -200,6 +200,7 @@ static int discover(opal_list_t* nodelist, char *pbs_jobid)
         /* up the nodeid */
         nodeid++;
     }
+    fclose(fp);
 
     return ORTE_SUCCESS;
 }