compat/mingw.h: drop extern from function declaration
In 554544276a (*.[ch]: remove extern from function declarations using
spatch, 2019-04-29), `extern` on function declarations were declared to
be redundant and thus removed from the codebase. An `extern` was
accidentally reintroduced in 08809c09aa (mingw: add a helper function to
attach GDB to the current process, 2020-02-13).
Remove this spurious `extern`.
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/compat/mingw.h b/compat/mingw.h
index e6fe810..af8eddd 100644
--- a/compat/mingw.h
+++ b/compat/mingw.h
@@ -606,7 +606,7 @@
* Call this function to open a new MinTTY (this assumes you are in Git for
* Windows' SDK) with a GDB that attaches to the current process right away.
*/
-extern void open_in_gdb(void);
+void open_in_gdb(void);
/*
* Used by Pthread API implementation for Windows
