corrected code style errors

- add missing brackets around one-line statements
- add paretheses around return values

tests/bench/ascii.c

@@ -70,10 +70,10 @@ static bool
 cmp_tolower1(void *va, void *vb, unsigned int size) {
 	for (uint8_t *a = va, *b = vb; size-- > 0; a++, b++) {
 		if (TOLOWER(*a) != TOLOWER(*b)) {
-			return false;
+			return (false);
 		}
 	}
-	return true;
+	return (true);
 }
 
 static bool oldskool_result;

tests/bench/qpmulti.c

@@ -77,7 +77,7 @@ rand_zipf(uint32_t max, double skew) {
 		double ratio = sample <= 1 ? pow(sample, -s)
 					   : pow(sample, -s) / pow(invB, -s);
 		if (ratio > (double)isc_random32() / UINT32_MAX) {
-			return sample - 1;
+			return (sample - 1);
 		}
 	}
 }

tests/irs/resconf_test.c

@@ -68,15 +68,15 @@ check_ndots(irs_resconf_t *resconf) {
 static isc_result_t
 check_options(irs_resconf_t *resconf) {
 	if (irs_resconf_getattempts(resconf) != 3) {
-		return ISC_R_BADNUMBER; /* default value only */
+		return (ISC_R_BADNUMBER); /* default value only */
 	}
 
 	if (irs_resconf_getndots(resconf) != 2) {
-		return ISC_R_BADNUMBER;
+		return (ISC_R_BADNUMBER);
 	}
 
 	if (irs_resconf_gettimeout(resconf) != 1) {
-		return ISC_R_BADNUMBER;
+		return (ISC_R_BADNUMBER);
 	}
 
 	return (ISC_R_SUCCESS);