Fix unused variable warning.
Since nfences is only used in an assert, mark it as maybe unused.
Test: Builds without warnings.
Change-Id: I25cc42699781740e5335a67a8f48e2c883dba264
diff --git a/dlmalloc.c b/dlmalloc.c
index a61c0da..3eb761d 100644
--- a/dlmalloc.c
+++ b/dlmalloc.c
@@ -4009,7 +4009,8 @@
msegmentptr ss = (msegmentptr)(chunk2mem(sp));
mchunkptr tnext = chunk_plus_offset(sp, ssize);
mchunkptr p = tnext;
- int nfences = 0;
+ /* Only used in assert. */
+ [[maybe_unused]] int nfences = 0;
/* reset top to new space */
init_top(m, (mchunkptr)tbase, tsize - TOP_FOOT_SIZE);