libcper: srcrev bump 21c2154929..255bd81a99

Karthik Rajagopalan (1):
      Use extern C guards in all headers

Change-Id: I318fc8969fc39ad7ceafd07b4efef187fb030986
Signed-off-by: Andrew Geissler <openbmcbump-github@yahoo.com>
diff --git a/meta-phosphor/recipes-phosphor/libcper/libcper_git.bb b/meta-phosphor/recipes-phosphor/libcper/libcper_git.bb
index 793ed34..82377bb 100644
--- a/meta-phosphor/recipes-phosphor/libcper/libcper_git.bb
+++ b/meta-phosphor/recipes-phosphor/libcper/libcper_git.bb
@@ -8,7 +8,7 @@
     "
 
 PV = "1.0+git${SRCPV}"
-SRCREV = "21c2154929223aaf1b4ca46eae70f9cc20c6db27"
+SRCREV = "255bd81a99d168c27a570c588733bb6cfc33840f"
 
 SRC_URI = "git://github.com/openbmc/libcper.git;protocol=https;branch=main"