kernel/printk.c: Made printk_recursion_bug_msg static.

Signed-off-by: Daniel Guilak <daniel@danielguilak.com>
Acked-by: Josh Triplett <josh@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/printk.c b/kernel/printk.c
index 8fb01c3..e2129e8 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -666,7 +666,7 @@
 	return retval;
 }
 
-const char printk_recursion_bug_msg [] =
+static const char printk_recursion_bug_msg [] =
 			KERN_CRIT "BUG: recent printk recursion!\n";
 static int printk_recursion_bug;