lavc/libxavs2: Cosmetics: Fix indentation for switch statement

Cosmetics: Fix indentation for switch statement like the Linux
kerenl style.
Signed-off-by: Jun Zhao <mypopydev@gmail.com>

libavcodec/libxavs2.c

@@ -271,7 +271,7 @@ static const AVClass libxavs2 = {
 
 static const AVCodecDefault xavs2_defaults[] = {
     { "b",                "0" },
-    { "g",                "48" },
+    { "g",                "48"},
     { "bf",               "7" },
     { NULL },
 };