don't try to find a material when the list is empty.

1 files changed, 1 insertions, 1 deletions

diff --git a/obj.c b/obj.c
index de1c458..ef3f0fb 100644
--- a/obj.c
+++ b/obj.c
@@ -738,7 +738,7 @@ Line2:
 					*p++ = c;
 				}while(c = Bgetc(bin), (isalnum(c) || c == '.' || c == '_') && p-buf < sizeof(buf)-1);
 				*p = 0;
-				if((m = getmtl(obj->materials, buf)) == nil){
+				if(obj->materials != nil && (m = getmtl(obj->materials, buf)) == nil){
 					error("no material '%s' found", buf);
 					goto error;
 				}