Fix Android native Git child exit handling so committed levels validate and Git calls avoid SIGSEGV status 139

patches/git/0001-githug-embedded-git-main.patch

@@ -0,0 +1,49 @@
+diff --git a/common-main.c b/common-main.c
+index 0000000000..0000000000 100644
+--- a/common-main.c
++++ b/common-main.c
+@@ -1,6 +1,27 @@
+ #include "git-compat-util.h"
+ #include "common-init.h"
+ 
++#ifdef GITHUG_EMBEDDED_MAIN
++void githug_exit(int code)
++{
++	code &= 0xff;
++	fflush(stdout);
++	fflush(stderr);
++	_exit(code);
++}
++
++int githug_git_main(int argc, const char **argv)
++{
++	int result;
++
++	init_git(argv);
++	result = cmd_main(argc, argv);
++
++	/* Match Git's real main(), but return instead of calling libc exit(). */
++	return common_exit(__FILE__, __LINE__, result);
++}
++#endif
++
+ int main(int argc, const char **argv)
+ {
+ 	int result;
+diff --git a/git-compat-util.h b/git-compat-util.h
+index 0000000000..0000000000 100644
+--- a/git-compat-util.h
++++ b/git-compat-util.h
+@@ -1047,7 +1047,12 @@ int cmd_main(int, const char **);
+  * optionally emit a message before calling the real exit().
+  */
+ int common_exit(const char *file, int line, int code);
++#ifdef GITHUG_EMBEDDED_MAIN
++NORETURN void githug_exit(int code);
++#define exit(code) githug_exit(common_exit(__FILE__, __LINE__, (code)))
++#else
+ #define exit(code) exit(common_exit(__FILE__, __LINE__, (code)))
++#endif
+ 
+ /*
+  * This include must come after system headers, since it introduces macros that