Fix segfault in image_size_error

* src/image.c (image_size_error): Pass a Lisp string to
image_error, not a C string.  (Bug#21641)

diff --git a/src/image.c b/src/image.c
index b586c5341d72bd93a659ad0a456c13947956fc41..10b067f889c36a0e929f823441fd41ffa0c33862 100644 (file)
--- a/src/image.c
+++ b/src/image.c
@@ -647,7 +647,8 @@ image_error (const char *format, ...)
 static void
 image_size_error (void)
 {
-  image_error ("Invalid image size (see `%s')", "max-image-size");
+  AUTO_STRING (max_image_size_name, "max-image-size");
+  image_error ("Invalid image size (see `%s')", max_image_size_name);
 }
 
 \f