Added winmm-fullpath patchset

patches/winmm-fullpath/0001-winmm-Pass-a-fullpath-to-CreateFileA.patch

@@ -0,0 +1,48 @@
+From 48be62052066fd376cc5284ef0539f0ff4d6ba76 Mon Sep 17 00:00:00 2001
+From: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>
+Date: Mon, 3 Aug 2020 12:02:13 +1000
+Subject: [PATCH] winmm: Pass a fullpath to CreateFileA
+
+---
+ dlls/winmm/mmio.c | 18 +++++++++++++++++-
+ 1 file changed, 17 insertions(+), 1 deletion(-)
+
+diff --git a/dlls/winmm/mmio.c b/dlls/winmm/mmio.c
+index 48bbd3ed48d..a3e2650f50a 100644
+--- a/dlls/winmm/mmio.c
++++ b/dlls/winmm/mmio.c
+@@ -52,6 +52,9 @@ static WINE_MMIO *MMIOList;
+ static HANDLE create_file_OF( LPCSTR path, INT mode )
+ {
+     DWORD access, sharing, creation;
++    HANDLE ret;
++    char *fullpath = NULL;
++    DWORD len;
+ 
+     if (mode & OF_CREATE)
+     {
+@@ -79,7 +82,20 @@ static HANDLE create_file_OF( LPCSTR path, INT mode )
+     case OF_SHARE_COMPAT:
+     default:                  sharing = FILE_SHARE_READ | FILE_SHARE_WRITE; break;
+     }
+-    return CreateFileA( path, access, sharing, NULL, creation, FILE_ATTRIBUTE_NORMAL, 0 );
++
++    len = SearchPathA( NULL, path, NULL, 0, fullpath, NULL );
++    if (!len)
++        return CreateFileA( path, access, sharing, NULL, creation, FILE_ATTRIBUTE_NORMAL, 0 );
++
++    fullpath = HeapAlloc(GetProcessHeap(), 0, len);
++    if (!fullpath)
++        return INVALID_HANDLE_VALUE;
++
++    SearchPathA( NULL, path, NULL, len, fullpath, NULL );
++    ret = CreateFileA( fullpath, access, sharing, NULL, creation, FILE_ATTRIBUTE_NORMAL, 0 );
++
++    HeapFree(GetProcessHeap(), 0, fullpath);
++    return ret;
+ }
+ 
+ /**************************************************************************
+-- 
+2.27.0
+

patches/winmm-fullpath/definition

@@ -0,0 +1 @@
+Fixes: [49650] winmm: Support relative paths when option media files