[glibc] elf: Account for glibc-hwcaps/ prefix in _dl_important_hwcaps

[Florian Weimer]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8a30bb4e0604aefcf28f20360fc8ba8ef8604b9c

commit 8a30bb4e0604aefcf28f20360fc8ba8ef8604b9c
Author: Florian Weimer <fweimer@redhat.com>
Date:   Wed Dec 23 12:07:20 2020 +0100

    elf: Account for glibc-hwcaps/ prefix in _dl_important_hwcaps

Diff:
---
 elf/dl-hwcaps.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/elf/dl-hwcaps.c b/elf/dl-hwcaps.c
index 000e3c0eb9..6c394714d8 100644
--- a/elf/dl-hwcaps.c
+++ b/elf/dl-hwcaps.c
@@ -192,6 +192,7 @@ _dl_important_hwcaps (const char *glibc_hwcaps_prepend,
 
   /* Each hwcaps subdirectory has a GLIBC_HWCAPS_PREFIX string prefix
      and a "/" suffix once stored in the result.  */
+  hwcaps_counts.maximum_length += strlen (GLIBC_HWCAPS_PREFIX) + 1;
   size_t total = (hwcaps_counts.count * (strlen (GLIBC_HWCAPS_PREFIX) + 1)
 		  + hwcaps_counts.total_length);