Use the right header guard.
Believe it or not, clang found this detail with -Wheader-guard.
diff --git a/agent/mibgroup/util_funcs/get_pid_from_inode.h b/agent/mibgroup/util_funcs/get_pid_from_inode.h
index 7c58760..ad887a7 100644
--- a/agent/mibgroup/util_funcs/get_pid_from_inode.h
+++ b/agent/mibgroup/util_funcs/get_pid_from_inode.h
@@ -3,7 +3,7 @@
* that controls a given inode on linux.
*/
#ifndef NETSNMP_MIBGROUP_UTIL_FUNCS_GET_PID_FROM_INODE_H
-#define NETSNMP_MIBGROUP_UTIL_FUNCS_HEADER_SIMPLE_TABLE_H
+#define NETSNMP_MIBGROUP_UTIL_FUNCS_GET_PID_FROM_INODE_H
#ifndef linux
config_error(get_pid_from_inode is only suppored on linux)
@@ -31,4 +31,4 @@
void netsnmp_get_pid_from_inode_init(void);
pid_t netsnmp_get_pid_from_inode(ino64_t);
-#endif /* NETSNMP_MIBGROUP_UTIL_FUNCS_HEADER_SIMPLE_TABLE_H */
+#endif /* NETSNMP_MIBGROUP_UTIL_FUNCS_GET_PID_FROM_INODE_H */
