Fixes another address that can't be NULL

The variable 'ProcessName' is an array of 'char', it can't be NULL, so
don't check for it.

Make sure that the variable 'proc_name' is initialized to NULL. Change
how we copy the string from malloc() and strcpy() to strndup(). As with
malloc() we don't check the result, this is done before usage.

src/libnml/nml/nml_mod.cc

@@ -163,6 +163,7 @@ NML_MODULE::zero_common_vars ()
   min_run_time = 1e6;
   max_run_time = 0;
   start_cycle_time = 0;
+  proc_name = 0;
   temp_file = 0;
   temp_line = 0;
   Dclock_expiration = 0;
@@ -271,12 +272,7 @@ NML_MODULE::setCmdChannel (RCS_CMD_CHANNEL * cmd_channel)
     }
   if (NULL != commandIn->cms)
     {
-      if (NULL != commandIn->cms->ProcessName)
-	{
-	  proc_name =
-	    (char *) malloc (strlen (commandIn->cms->ProcessName) + 1);
-	  strcpy (proc_name, commandIn->cms->ProcessName);
-	}
+      proc_name = strndup(commandIn->cms->ProcessName, LINELEN);
     }
 }