include: Add va_list version of the debug printf functions.

include/wine/debug.h

@@ -168,28 +168,46 @@ extern int __cdecl __wine_dbg_header( enum __wine_debug_class cls, struct __wine
 # define __wine_dbg_cdecl
 #endif
 
+static const char * __wine_dbg_cdecl wine_dbg_vsprintf( const char *format, va_list args ) __WINE_PRINTF_ATTR(1,0);
+static inline const char * __wine_dbg_cdecl wine_dbg_vsprintf( const char *format, va_list args )
+{
+    char buffer[200];
+
+    vsnprintf( buffer, sizeof(buffer), format, args );
+    return __wine_dbg_strdup( buffer );
+}
+
 static const char * __wine_dbg_cdecl wine_dbg_sprintf( const char *format, ... ) __WINE_PRINTF_ATTR(1,2);
 static inline const char * __wine_dbg_cdecl wine_dbg_sprintf( const char *format, ... )
 {
-    char buffer[200];
+    const char *ret;
     va_list args;
 
     va_start( args, format );
-    vsnprintf( buffer, sizeof(buffer), format, args );
+    ret = wine_dbg_vsprintf( format, args );
     va_end( args );
-    return __wine_dbg_strdup( buffer );
+    return ret;
+}
+
+static int __wine_dbg_cdecl wine_dbg_vprintf( const char *format, va_list args ) __WINE_PRINTF_ATTR(1,0);
+static inline int __wine_dbg_cdecl wine_dbg_vprintf( const char *format, va_list args )
+{
+    char buffer[1024];
+
+    vsnprintf( buffer, sizeof(buffer), format, args );
+    return __wine_dbg_output( buffer );
 }
 
 static int __wine_dbg_cdecl wine_dbg_printf( const char *format, ... ) __WINE_PRINTF_ATTR(1,2);
 static inline int __wine_dbg_cdecl wine_dbg_printf( const char *format, ... )
 {
-    char buffer[1024];
+    int ret;
     va_list args;
 
     va_start( args, format );
-    vsnprintf( buffer, sizeof(buffer), format, args );
+    ret = wine_dbg_vprintf( format, args );
     va_end( args );
-    return __wine_dbg_output( buffer );
+    return ret;
 }
 
 static int __wine_dbg_cdecl wine_dbg_log( enum __wine_debug_class cls,