md_is_link_label: Fix warning about potentially uninitialized variable... ... when build with gcc 13.2.0 in release build.
diff --git a/src/md4c.c b/src/md4c.c
index cb44e3d..3038863 100644
--- a/src/md4c.c
+++ b/src/md4c.c
@@ -1936,6 +1936,8 @@ md_is_link_label(MD_CTX* ctx, const MD_LINE* lines, MD_SIZE n_lines, OFF beg,
MD_SIZE line_index = 0;
int len = 0;
+ *p_beg_line_index = 0;
+
if(CH(off) != _T('['))
return FALSE;
off++;