[WINESYNC] msi: Global variable compatibility update for gcc 10.

Signed-off-by: Michael Cronenworth <[email protected]>
Signed-off-by: Hans Leidekker <[email protected]>
Signed-off-by: Alexandre Julliard <[email protected]>

wine commit id cc7f698b8245a48669d248569e7589ff824f2c70 by Michael Cronenworth <[email protected]>

Author: winesync

dll/win32/msi/msi.c

@@ -51,6 +51,8 @@
 
 WINE_DEFAULT_DEBUG_CHANNEL(msi);
 
+BOOL is_wow64;
+
 static const WCHAR installerW[] = {'\\','I','n','s','t','a','l','l','e','r',0};
 
 UINT msi_locate_product(LPCWSTR szProduct, MSIINSTALLCONTEXT *context)

dll/win32/msi/msipriv.h

@@ -42,7 +42,7 @@
 #include "winemsi_s.h"
 
 static const BOOL is_64bit = sizeof(void *) > sizeof(int);
-BOOL is_wow64 DECLSPEC_HIDDEN;
+extern BOOL is_wow64 DECLSPEC_HIDDEN;
 
 #define MSI_DATASIZEMASK 0x00ff
 #define MSITYPE_VALID    0x0100