Fix typo

Signed-off-by: Ralph Castain <rhc@open-mpi.org>
(cherry picked from commit f7a537cf04)

opal/mca/pmix/ext2x/ext2x_component.c

@@ -118,7 +118,7 @@ static int external_open(void)
     OBJ_CONSTRUCT(&mca_pmix_ext2x_component.dmdx, opal_list_t);
 
     version = PMIx_Get_version();
-    if ('2' >= version[0]) {
+    if ('2' > version[0]) {
         opal_show_help("help-pmix-base.txt",
                        "incorrect-pmix", true, version, "v2.x");
         return OPAL_ERROR;