Commit fc7593c for zlib

commit fc7593c0e5447fa7a56b8c269cac944dc83952a0
Author: Mark Adler <git@madler.net>
Date:   Tue Feb 10 18:08:12 2026 -0800

    Avoid missing-extern warnings.

diff --git a/contrib/minizip/unzip.h b/contrib/minizip/unzip.h
index ceb614e..8e78564 100644
--- a/contrib/minizip/unzip.h
+++ b/contrib/minizip/unzip.h
@@ -70,6 +70,8 @@ typedef unzFile__ *unzFile;
 typedef voidp unzFile;
 #endif

+extern const char unz_copyright[];
+

 #define UNZ_OK                          (0)
 #define UNZ_END_OF_LIST_OF_FILE         (-100)
diff --git a/contrib/minizip/zip.h b/contrib/minizip/zip.h
index 9526eac..2a0fac6 100644
--- a/contrib/minizip/zip.h
+++ b/contrib/minizip/zip.h
@@ -69,6 +69,8 @@ typedef zipFile__ *zipFile;
 typedef voidp zipFile;
 #endif

+extern const char zip_copyright[];
+
 #define ZIP_OK                          (0)
 #define ZIP_EOF                         (0)
 #define ZIP_ERRNO                       (Z_ERRNO)
diff --git a/zutil.h b/zutil.h
index acc1907..0f983f7 100644
--- a/zutil.h
+++ b/zutil.h
@@ -36,6 +36,10 @@
    define "local" for the non-static meaning of "static", for readability
    (compile with -Dlocal if your debugger can't find static symbols) */

+extern const char deflate_copyright[];
+extern const char inflate_copyright[];
+extern const char inflate9_copyright[];
+
 typedef unsigned char  uch;
 typedef uch FAR uchf;
 typedef unsigned short ush;