tests/check/elements/bpwsinc.c: Make one test constraint a bit stricter.

Original commit message from CVS:
* tests/check/elements/bpwsinc.c: (GST_START_TEST):
Make one test constraint a bit stricter.

tests/check/elements/audiowsincband.c

@@ -254,7 +254,7 @@ GST_START_TEST (test_bp_22050hz)
   for (i = 0; i < 1024; i++)
     rms += res[i] * res[i];
   rms = sqrt (rms / 1024.0);
-  fail_unless (rms <= 0.3);
+  fail_unless (rms <= 0.1);
 
   /* cleanup */
   cleanup_bpwsinc (bpwsinc);