Use gp_boolean_is_true from interposer plugin's GSS_USE_PROXY check.

Signed-off-by: Günther Deschner <[email protected]>
Reviewed-by: Simo Sorce <[email protected]>

Author: Günther Deschner

proxy/src/mechglue/gss_plugin.c

@@ -105,7 +105,8 @@ gss_OID_set gss_mech_interposer(gss_OID mech_type)
     if (!envval) {
         return NULL;
     }
-    if ((strcmp(envval, "YES") != 0) && (strcmp(envval, "1") != 0)) {
+
+    if (!gp_boolean_is_true(envval)) {
         return NULL;
     }