file: fix gcc2 build

sys-apps/file/file-5.39.recipe

@@ -8,7 +8,7 @@ HOMEPAGE="https://www.darwinsys.com/file/"
 COPYRIGHT="1986-1999 Ian F. Darwin
 	1994-2018 Christos Zoulas"
 LICENSE="BSD (2-clause)"
-REVISION="1"
+REVISION="2"
 SOURCE_URI="ftp://ftp.astron.com/pub/file/file-$portVersion.tar.gz"
 CHECKSUM_SHA256="f05d286a76d9556243d0cb05814929c2ecf3a5ba07963f8f70bfaaa70517fad1"
 PATCHES="file-$portVersion.patchset"

sys-apps/file/patches/file-5.39.patchset

@@ -1,4 +1,4 @@
-From 63832b804b7a09fa4a8ccd258bf904f4273430ba Mon Sep 17 00:00:00 2001
+From 9dc5da6189526e5c6370893d8035eda541cc59aa Mon Sep 17 00:00:00 2001
 From: Jerome Duval <jerome.duval@gmail.com>
 Date: Thu, 12 May 2016 19:46:43 +0000
 Subject: Haiku patch
@@ -80,6 +80,20 @@ index 78a056b..6e74bff 100644
  
  	if (strncmp(buf, s, slen) != 0)
  		return 0;
+diff --git a/src/funcs.c b/src/funcs.c
+index 09b965e..f6a64ea 100644
+--- a/src/funcs.c
++++ b/src/funcs.c
+@@ -87,7 +87,8 @@ file_checkfield(char *msg, size_t mlen, const char *what, const char **pp)
+ protected int
+ file_checkfmt(char *msg, size_t mlen, const char *fmt)
+ {
+-	for (const char *p = fmt; *p; p++) {
++	const char *p;
++	for (p = fmt; *p; p++) {
+ 		if (*p != '%')
+ 			continue;
+ 		if (*++p == '%')
 diff --git a/src/readelf.c b/src/readelf.c
 index cf1dc91..8039000 100644
 --- a/src/readelf.c