https://github.com/gentoo/elfix/pull/3

From 776afeae92d2afd3340cd753abc58ccd8daba48f Mon Sep 17 00:00:00 2001
From: Sam James <sam@gentoo.org>
Date: Fri, 6 Jan 2023 06:39:30 +0000
Subject: [PATCH 2/2] install-xattr: fix small memory leak

There's another with strdup/malloc but it gets a bit messier
to fix so let's leave that for now (this is mostly about correctness
anyway, as the runtime of install-xattr is very small):
```
Direct leak of 4097 byte(s) in 1 object(s) allocated from:
    #0 0x7f4a2c22e257 in __interceptor_malloc /usr/src/debug/sys-devel/gcc-13.0.0_pre20230101/gcc-13-20230101/libsanitizer/asan/asan_malloc_linux.cpp:69
    #1 0x7f4a2c1d2b40 in __interceptor_realpath /usr/src/debug/sys-devel/gcc-13.0.0_pre20230101/gcc-13-20230101/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:3904
    #2 0x55da3adf5629 in realpath /usr/include/bits/stdlib.h:42
    #3 0x55da3adf5629 in main /home/sam/git/elfix/install-xattr.c:252
```

Signed-off-by: Sam James <sam@gentoo.org>
--- a/install-xattr.c
+++ b/install-xattr.c
@@ -248,7 +248,6 @@ main(int argc, char* argv[])
 	char *target = NULL;           /* the target file or directory                                 */
 	char *path;                    /* path to the target file                                      */
 
-	char *mypath = realpath("/proc/self/exe", NULL); /* path to argv[0]                            */
 	char *install;                                   /* path to the system install                 */
 
 	struct stat s;                 /* test if a file is a regular file or a directory              */
@@ -353,7 +352,9 @@ main(int argc, char* argv[])
 		case -1:
 			err(1, "fork() failed");
 
-		case 0:
+		case 0: {
+			char *mypath = realpath("/proc/self/exe", NULL); /* path to argv[0] */
+
 			/* find system install avoiding mypath and portage_helper_path! */
 			if (portage_helper_path)
 				portage_helper_canpath = realpath(portage_helper_path, NULL);
@@ -363,6 +364,7 @@ main(int argc, char* argv[])
 			argv[0] = install;        /* so coreutils' lib/program.c behaves  */
 			execv(install, argv);     /* The kernel will free(install).       */
 			err(1, "execv() failed");
+		}
 
 		default:
 			wait(&status);
-- 
2.39.0