[IPV4]: Fix inetpeer gcc-4.2 warnings

  CC      net/ipv4/inetpeer.o
net/ipv4/inetpeer.c: In function 'unlink_from_pool':
net/ipv4/inetpeer.c:297: warning: the address of 'stack' will always evaluate as 'true'
net/ipv4/inetpeer.c:297: warning: the address of 'stack' will always evaluate as 'true'
net/ipv4/inetpeer.c: In function 'inet_getpeer':
net/ipv4/inetpeer.c:409: warning: the address of 'stack' will always evaluate as 'true'
net/ipv4/inetpeer.c:409: warning: the address of 'stack' will always evaluate as 'true'

"Fix" by checking for != NULL.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index 6cbce96a54ce..771031dfbd0f 100644
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -158,7 +158,7 @@ static void unlink_from_unused(struct inet_peer *p)
 #define lookup(_daddr,_stack)                                   \
 ({                                                              \
         struct inet_peer *u, **v;                               \
-        if (_stack) {                                           \
+        if (_stack != NULL) {                                   \
                 stackptr = _stack;                              \
                 *stackptr++ = &peer_root;                       \
         }                                                       \
@@ -169,7 +169,7 @@ static void unlink_from_unused(struct inet_peer *p)
                         v = &u->avl_left;                       \
                 else                                            \
                         v = &u->avl_right;                      \
-                if (_stack)                                     \
+                if (_stack != NULL)                             \
                         *stackptr++ = v;                        \
                 u = *v;                                         \
         }                                                       \