improve the check, avoid strlen on NULL

diff --git a/ext/exif/exif.c b/ext/exif/exif.c
index 1dfa956aceac3097ed6a29378572b7a8fe5b42c3..f62f77a60f5fab7650c479f6f0146354d50aae51 100644 (file)
--- a/ext/exif/exif.c
+++ b/ext/exif/exif.c
@@ -1702,10 +1702,6 @@ static void exif_iif_add_value(image_info_type *image_info, int section_index, c
                        if (!length)
                                break;
                case TAG_FMT_UNDEFINED:
-                       if (tag == TAG_MAKER_NOTE) {
-                               length = MIN(length, strlen(value));
-                       }
-
                        if (value) {
                                if (tag == TAG_MAKER_NOTE) {
                                        length = MIN(length, strlen(value));