[PATCH] Fix missing parens in set_personality()

If you call set_personality() with an expression such as:

set_personality(foo ? PERS_FOO1 : PERS_FOO2);

then this evaluates to:

((current->personality == foo ? PERS_FOO1 : PERS_FOO2) ? ...

which is obviously not the intended result. Add the missing parents
to ensure this gets evaluated as expected:

((current->personality == (foo ? PERS_FOO1 : PERS_FOO2)) ? ...

Signed-off-by: Russell King <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

include/linux/personality.h

···
  * Change personality of the currently running process.
  */
 #define set_personality(pers) \
-	((current->personality == pers) ? 0 : __set_personality(pers))
+	((current->personality == (pers)) ? 0 : __set_personality(pers))
 
 #endif /* __KERNEL__ */