Make --run-tests' jv_test() quiet

tests/jq.test

@@ -1173,4 +1173,7 @@ true
 [range(-99/2;99/2;1)] as $orig | [$orig[]|pow(2;.)|log2] as $back | ($orig|keys)[]|. as $k | (($orig|.[$k])-($back|.[$k]))|if . < 0 then . * -1 else . end|select(.>.00005)
 null
 
+%%FAIL
+}
+jq: error: syntax error, unexpected INVALID_CHARACTER, expecting $end (Unix shell quoting issues?) at <top-level>, line 1: