apply gofmt to malloc math once os

R=gri
DELTA=566  (4 added, 14 deleted, 548 changed)
OCL=35410
CL=35419
diff --git a/src/pkg/math/atan2.go b/src/pkg/math/atan2.go
index efd5cb9..5ded1a4 100644
--- a/src/pkg/math/atan2.go
+++ b/src/pkg/math/atan2.go
@@ -14,14 +14,14 @@
 		if x >= 0 {
 			return Pi/2;
 		}
-		return -Pi/2;
+		return -Pi / 2;
 	}
 	q := Atan(x/y);
 	if y < 0 {
 		if q <= 0 {
-			return q + Pi;
+			return q+Pi;
 		}
-		return q - Pi;
+		return q-Pi;
 	}
 	return q;
 }