edje_cc: Avoid segfault when strcmp NULL items

Martin reported a porblem with one of the SHR project edc files after an upgrade
to 1.13. The segfault itself is easy enough to fix here but I think there might
be other problems with the edc after this segfault is gone. We will see.

Fixes T2106

1 files changed, 1 insertions, 1 deletions

diff --git a/src/bin/edje/edje_cc_out.c b/src/bin/edje/edje_cc_out.c
index a284bebfff..b80e59dd4d 100755
--- a/src/bin/edje/edje_cc_out.c
+++ b/src/bin/edje/edje_cc_out.c
@@ -387,7 +387,7 @@ check_source_links(Edje_Part_Collection *pc, Edje_Part *ep, Eet_File *ef, Eina_L
    EINA_LIST_FOREACH(edje_collections, l, pc_source)
      {
         /* Find sourced group */
-        if (strcmp(ep->source, pc_source->part) == 0)
+        if (ep->source && pc_source->part && strcmp(ep->source, pc_source->part) == 0)
           {
              /* Go through every part to find parts with type GROUP */
              for (i = 0; i < pc_source->parts_count; ++i)