Another round of tweaks for spandsp. There should be no functional changes,

although quite a few things have changed in the test suite

libs/spandsp/tests/fsk_tests.c

@@ -295,7 +295,7 @@ int main(int argc, char *argv[])
             fsk_rx(caller_rx, caller_model_amp, samples);
         }
 
-        if (sf_close(inhandle) != 0)
+        if (sf_close_telephony(inhandle))
         {
             fprintf(stderr, "    Cannot close audio file '%s'\n", decode_test_file);
             exit(2);
@@ -519,7 +519,7 @@ int main(int argc, char *argv[])
     }
     if (log_audio)
     {
-        if (sf_close(outhandle) != 0)
+        if (sf_close_telephony(outhandle))
         {
             fprintf(stderr, "    Cannot close audio file '%s'\n", OUTPUT_FILE_NAME);
             exit(2);