schema tree REFACTOR rename path_context to path_mod

Context module variables are always called mod.
diff --git a/src/xpath.c b/src/xpath.c
index 56cfa2a..146f9dd 100644
--- a/src/xpath.c
+++ b/src/xpath.c
@@ -3698,7 +3698,7 @@
 
             /* it was already evaluated on schema, it must succeed */
             rc = ly_path_compile(set->ctx, sleaf->module, (struct lysc_node *)sleaf, lref->path, LY_PATH_LREF_TRUE,
-                                 oper, LY_PATH_TARGET_MANY, set->format, lref->path_context, &p);
+                    oper, LY_PATH_TARGET_MANY, set->format, (void *)lref->path_mod, &p);
             assert(!rc);
 
             /* get the target node */