libsframe: testsuite: fix memory leaks in testcases

ChangeLog:

	* libsframe/testsuite/libsframe.decode/be-flipping.c: Free
	SFrame buffer.
	* libsframe/testsuite/libsframe.decode/frecnt-1.c: Likewise.
	* libsframe/testsuite/libsframe.decode/frecnt-2.c: Likewise.

libsframe/testsuite/libsframe.decode/be-flipping.c

@@ -104,6 +104,9 @@ main (void)
   err = sframe_decoder_get_funcdesc (dctx, 0, &nfres, &fsize, &fstart, &finfo);
   TEST ("be-flipping: Decoder get FDE", err == 0);
   TEST ("be-flipping: Decoder FRE count", nfres == 5);
+
+  free (sf_buf);
+  sf_buf = NULL;
       
   sframe_decoder_free (&dctx);
   return 0;

libsframe/testsuite/libsframe.decode/frecnt-1.c

@@ -89,6 +89,9 @@ main (void)
   TEST ("frecnt-1: Decoder get FDE", err == 0);
   TEST ("frecnt-1: Decoder FRE count", nfres == 4);
 
+  free (sf_buf);
+  sf_buf = NULL;
+
   sframe_decoder_free (&dctx);
   return 0;
 

libsframe/testsuite/libsframe.decode/frecnt-2.c

@@ -94,6 +94,9 @@ main (void)
       TEST ("frecnt-2: Decode get FRE", nfres == 4);
     }
 
+  free (sf_buf);
+  sf_buf = NULL;
+
   sframe_decoder_free (&dctx);
   return 0;