tests: Try to fix valgrind warnings.

tests/client/torture_forward.c

@@ -47,7 +47,7 @@ static void setup(void **state)
 
 static void teardown(void **state)
 {
-    ssh_session session = *state;
+    ssh_session session = (ssh_session)*state;
 
     assert_false(session == NULL);
 
@@ -59,7 +59,7 @@ static void teardown(void **state)
 
 static void torture_ssh_forward(void **state)
 {
-    ssh_session session = *state;
+    ssh_session session = (ssh_session)*state;
 #if 0
     ssh_channel c;
 #endif

tests/client/torture_sftp_read.c

@@ -29,7 +29,7 @@ static void setup(void **state) {
 }
 
 static void teardown(void **state) {
-    struct torture_sftp *t = *state;
+    struct torture_sftp *t = (struct torture_sftp*) *state;
 
     assert_false(t == NULL);
 
@@ -38,7 +38,7 @@ static void teardown(void **state) {
 }
 
 static void torture_sftp_read_blocking(void **state) {
-    struct torture_sftp *t = *state;
+    struct torture_sftp *t = (struct torture_sftp*) *state;
     char libssh_tmp_file[] = "/tmp/libssh_sftp_test_XXXXXX";
     char buf[MAX_XFER_BUF_SIZE];
     ssize_t bytesread;