CodingStyle: provide good example

[Pavel Machek]

if (!buffer) is actually prefered style, so lets use it in example.

								Pavel

Signed-off-by: Pavel Machek <pavel@xxxxxxx>

diff --git a/Documentation/CodingStyle b/Documentation/CodingStyle
index 6caa146..9bb2d8a 100644
--- a/Documentation/CodingStyle
+++ b/Documentation/CodingStyle
@@ -406,7 +415,7 @@ int fun(int a)
 	int result = 0;
 	char *buffer = kmalloc(SIZE);
 
-	if (buffer == NULL)
+	if (!buffer)
 		return -ENOMEM;
 
 	if (condition1) {

-- 
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