Add 'exit' label and variable initialization to relevant test suite functions
diff --git a/tests/suites/test_suite_arc4.function b/tests/suites/test_suite_arc4.function
index f55a5e8..b6d3d4c 100644
--- a/tests/suites/test_suite_arc4.function
+++ b/tests/suites/test_suite_arc4.function
@@ -33,6 +33,7 @@
 
     TEST_ASSERT( strcmp( (char *) dst_hexstr, hex_dst_string ) == 0 );
 
+exit:
     arc4_free( &ctx );
 }
 /* END_CASE */