Fix the fix to remove compiler warning - an incorrect "\" was placed in the command string.

This commit was SVN r12805.

orte/mca/pls/rsh/pls_rsh_module.c

@@ -641,7 +641,7 @@ int orte_pls_rsh_launch(orte_jobid_t jobid)
 
     if (!(remote_csh || remote_sh)) {
         int i;
-        tmp = opal_argv_split("( test \! -r ./.profile || . ./.profile;", ' ');
+        tmp = opal_argv_split("( test ! -r ./.profile || . ./.profile;", ' ');
         if (NULL == tmp) {
             return ORTE_ERR_OUT_OF_RESOURCE;
         }