code cleanup/bugfix uninitialized values

- edgebisect bmesh operator used uninialized beauty field.
- BLI_join_dirfile could read from before the string bounds when passed an empty dir string.
- pransform could use an uninitialized projected coordinate (unlikely but possible)
- RNA_property_path_from_ID_check would compare against an uninitialized pointer when the path wasn't found.

also have bmesh walker use BM_edge_other_vert() utility function.

1 files changed, 6 insertions, 2 deletions

diff --git a/source/blender/makesrna/intern/rna_access.c b/source/blender/makesrna/intern/rna_access.c
index 2ccd7d293d3..543824eb5d5 100644
--- a/source/blender/makesrna/intern/rna_access.c
+++ b/source/blender/makesrna/intern/rna_access.c
@@ -1430,8 +1430,12 @@ int RNA_property_path_from_ID_check(PointerRNA *ptr, PropertyRNA *prop)
 		PropertyRNA *r_prop;
 
 		RNA_id_pointer_create(ptr->id.data, &id_ptr);
-		RNA_path_resolve(&id_ptr, path, &r_ptr, &r_prop);
-		ret = (prop == r_prop);
+		if (RNA_path_resolve(&id_ptr, path, &r_ptr, &r_prop) == TRUE) {
+			ret = (prop == r_prop);
+		}
+		else {
+			ret = FALSE;
+		}
 		MEM_freeN(path);
 	}