compat/*.[ch]: remove extern from function declarations using spatch

In 554544276a (*.[ch]: remove extern from function declarations using
spatch, 2019-04-29), we removed externs from function declarations using
spatch but we intentionally excluded files under compat/ since some are
directly copied from an upstream and we should avoid churning them so
that manually merging future updates will be simpler.

In the last commit, we determined the files which taken from an upstream
so we can exclude them and run spatch on the remainder.

This was the Coccinelle patch used:

	@@
	type T;
	identifier f;
	@@
	- extern
	  T f(...);

and it was run with:

	$ git ls-files compat/\*\*.{c,h} |
		xargs spatch --sp-file contrib/coccinelle/noextern.cocci --in-place
	$ git checkout -- \
		compat/regex/ \
		compat/inet_ntop.c \
		compat/inet_pton.c \
		compat/nedmalloc/ \
		compat/obstack.{c,h} \
		compat/poll/

Coccinelle has some trouble dealing with `__attribute__` and varargs so
we ran the following to ensure that no remaining changes were left
behind:

	$ git ls-files compat/\*\*.{c,h} |
		xargs sed -i'' -e 's/^\(\s*\)extern \([^(]*([^*]\)/\1\2/'
	$ git checkout -- \
		compat/regex/ \
		compat/inet_ntop.c \
		compat/inet_pton.c \
		compat/nedmalloc/ \
		compat/obstack.{c,h} \
		compat/poll/

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/compat/mingw.h b/compat/mingw.h
index a03e40e6e2..9ad204c57c 100644
--- a/compat/mingw.h
+++ b/compat/mingw.h
@@ -11,7 +11,7 @@ typedef _sigset_t sigset_t;
 #undef _POSIX_THREAD_SAFE_FUNCTIONS
 #endif
 
-extern int mingw_core_config(const char *var, const char *value, void *cb);
+int mingw_core_config(const char *var, const char *value, void *cb);
 #define platform_core_config mingw_core_config
 
 /*
@@ -443,7 +443,7 @@ static inline void convert_slashes(char *path)
 			*path = '/';
 }
 #define PATH_SEP ';'
-extern char *mingw_query_user_email(void);
+char *mingw_query_user_email(void);
 #define query_user_email mingw_query_user_email
 #if !defined(__MINGW64_VERSION_MAJOR) && (!defined(_MSC_VER) || _MSC_VER < 1800)
 #define PRIuMAX "I64u"
@@ -580,4 +580,4 @@ int main(int argc, const char **argv);
 /*
  * Used by Pthread API implementation for Windows
  */
-extern int err_win_to_posix(DWORD winerr);
+int err_win_to_posix(DWORD winerr);