Resolve some sparse warnings

Mainly, this is including header files to get definitions for functions
which is good to verify that the parameters match. None of these are
issues that would have shown as incorrect behavior of the program.

src/crypto/aes-cbc.c

@@ -17,6 +17,7 @@
 
 #include "common.h"
 #include "aes.h"
+#include "aes_wrap.h"
 
 /**
  * aes_128_cbc_encrypt - AES-128 CBC encryption

src/crypto/aes-ctr.c

@@ -17,6 +17,7 @@
 
 #include "common.h"
 #include "aes.h"
+#include "aes_wrap.h"
 
 /**
  * aes_128_ctr_encrypt - AES-128 CTR mode encryption

src/crypto/aes-encblock.c

@@ -17,6 +17,7 @@
 
 #include "common.h"
 #include "aes.h"
+#include "aes_wrap.h"
 
 /**
  * aes_128_encrypt_block - Perform one AES 128-bit block operation

src/crypto/aes-omac1.c

@@ -17,6 +17,7 @@
 
 #include "common.h"
 #include "aes.h"
+#include "aes_wrap.h"
 
 static void gf_mulx(u8 *pad)
 {

src/crypto/aes-unwrap.c

@@ -17,6 +17,7 @@
 
 #include "common.h"
 #include "aes.h"
+#include "aes_wrap.h"
 
 /**
  * aes_unwrap - Unwrap key with AES Key Wrap Algorithm (128-bit KEK) (RFC3394)

src/crypto/crypto_openssl.c

@@ -23,6 +23,7 @@
 
 #include "common.h"
 #include "wpabuf.h"
+#include "dh_group5.h"
 #include "crypto.h"
 
 #if OPENSSL_VERSION_NUMBER < 0x00907000

src/drivers/driver_nl80211.c

@@ -1701,7 +1701,7 @@ wpa_driver_nl80211_get_scan_results(void *priv)
 
 	res = os_zalloc(sizeof(*res));
 	if (res == NULL)
-		return 0;
+		return NULL;
 	msg = nlmsg_alloc();
 	if (!msg)
 		goto nla_put_failure;

src/wps/ndef.c

@@ -16,6 +16,7 @@
 #include "includes.h"
 #include "common.h"
 #include "wps/wps.h"
+#include "wps/wps_i.h"
 
 #define FLAG_MESSAGE_BEGIN (1 << 7)
 #define FLAG_MESSAGE_END (1 << 6)

src/wps/wps_registrar.c

@@ -1139,7 +1139,7 @@ static int wps_build_cred_encr_type(struct wpabuf *msg,
 
 
 static int wps_build_cred_network_key(struct wpabuf *msg,
-				      const const struct wps_credential *cred)
+				      const struct wps_credential *cred)
 {
 	wpa_printf(MSG_DEBUG, "WPS:  * Network Key");
 	wpabuf_put_be16(msg, ATTR_NETWORK_KEY);

src/wps/wps_ufd.c

@@ -21,6 +21,7 @@
 #include <dirent.h>
 
 #include "wps/wps.h"
+#include "wps/wps_i.h"
 
 #ifdef CONFIG_NATIVE_WINDOWS
 #define UFD_DIR1 "%s\\SMRTNTKY"