[NET] IPV4: Fix whitespace errors.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 20aea15..666d8a5 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1615,7 +1615,7 @@
 		if (window <= free_space - mss || window > free_space)
 			window = (free_space/mss)*mss;
 		else if (mss == full_space &&
-		         free_space > window + full_space/2)
+			 free_space > window + full_space/2)
 			window = free_space;
 	}