Fix underflow when leave_function() are unbalanced

include/libssh/priv.h

@@ -238,7 +238,7 @@ typedef struct signature_struct {
 
 struct error_struct {
 /* error handling */
-    int error_code;
+    unsigned int error_code;
     char error_buffer[ERROR_BUFFERLEN];
 };
 

libssh/connect.c

@@ -246,7 +246,6 @@ socket_t ssh_connect_host(SSH_SESSION *session, const char *host,
       ssh_set_error(session, SSH_FATAL, "Connect failed: %s", strerror(errno));
       close(s);
       s = -1;
-      leave_function();
       continue;
     } else {
       /* We are connected */

libssh/misc.c

@@ -33,7 +33,7 @@
 #include "config.h"
 
 #ifdef _WIN32
-#define _WIN32_IE 0x0400 //SHGetSpecialFolderPath
+#define _WIN32_IE 0x0501 //SHGetSpecialFolderPath
 #include <shlobj.h>
 #include <winsock2.h>
 #include <direct.h>

libssh/packet.c

@@ -502,7 +502,7 @@ error:
   return rc; /* SSH_OK, AGAIN or ERROR */
 }
 
-#ifdef HAVE_SSH1
+#ifdef WITH_SSH1
 static int packet_send1(SSH_SESSION *session) {
   unsigned int blocksize = (session->current_crypto ?
       session->current_crypto->out_cipher->blocksize : 8);
@@ -583,7 +583,7 @@ error:
 #endif /* WITH_SSH1 */
 
 int packet_send(SSH_SESSION *session) {
-#ifdef HAVE_SSH1
+#ifdef WITH_SSH1
   if (session->version == 1) {
     return packet_send1(session);
   }