avoid a null-reference

diff --git a/modules/src/read_em/readk.c b/modules/src/read_em/readk.c
index a44c66d..ab82b79 100644 (file)
--- a/modules/src/read_em/readk.c
+++ b/modules/src/read_em/readk.c
@@ -246,7 +246,8 @@ getstring(isident)
 #ifdef CHECKING
                if (strleft < 0) {
                        xerror("Negative length in string");
-                       return 0;
+                       s->length = 0;
+                       return s;
                }
 #endif CHECKING
        }