Refactor command line checks

Several checks are performed when opts->record_filename is not NULL.
Group them in a single block.

PR #3978 <https://github.com/Genymobile/scrcpy/pull/3978>

app/src/cli.c

@@ -1959,7 +1959,8 @@ parse_args_with_getopt(struct scrcpy_cli_args *args, int argc, char *argv[],
         return false;
     }
 
-    if (opts->record_filename && !opts->record_format) {
+    if (opts->record_filename) {
+        if (!opts->record_format) {
             opts->record_format = guess_record_format(opts->record_filename);
             if (!opts->record_format) {
                 LOGE("No format specified for \"%s\" "
@@ -1969,10 +1970,11 @@ parse_args_with_getopt(struct scrcpy_cli_args *args, int argc, char *argv[],
             }
         }
 
-    if (opts->record_filename && opts->audio_codec == SC_CODEC_RAW) {
+        if (opts->audio_codec == SC_CODEC_RAW) {
             LOGW("Recording does not support RAW audio codec");
             return false;
         }
+    }
 
     if (opts->audio_codec == SC_CODEC_RAW) {
         if (opts->audio_bit_rate) {