Problem: Redundant parentheses in return statements.
Solution: Remove them for KNF consistency.

(No functional changes; tested on OpenBSD -current.)
diff --git a/usr.bin/false/false.c b/usr.bin/false/false.c
index 240f4bd42dd..559b702738e 100644
--- a/usr.bin/false/false.c
+++ b/usr.bin/false/false.c
@@ -5,5 +5,5 @@
 int
 main(int argc, char *argv[])
 {
-	return (1);
+	return 1;
 }
diff --git a/usr.bin/true/true.c b/usr.bin/true/true.c
index a27b589e820..9967b3ab5d1 100644
--- a/usr.bin/true/true.c
+++ b/usr.bin/true/true.c
@@ -5,5 +5,5 @@
 int
 main(int argc, char *argv[])
 {
-	return (0);
+	return 0;
 }

• remove_return_parens.patch (464B)