fix error checking on SSL_new()

Author: codeplea

chap09/https_get.c

@@ -166,7 +166,7 @@ int main(int argc, char *argv[]) {
 
 
     SSL *ssl = SSL_new(ctx);
-    if (!ctx) {
+    if (!ssl) {
         fprintf(stderr, "SSL_new() failed.\n");
         return 1;
     }

chap09/tls_client.c

@@ -96,7 +96,7 @@ int main(int argc, char *argv[]) {
 
 
     SSL *ssl = SSL_new(ctx);
-    if (!ctx) {
+    if (!ssl) {
         fprintf(stderr, "SSL_new() failed.\n");
         return 1;
     }

chap10/https_server.c

@@ -323,7 +323,7 @@ int main() {
 
 
             client->ssl = SSL_new(ctx);
-            if (!ctx) {
+            if (!client->ssl) {
                 fprintf(stderr, "SSL_new() failed.\n");
                 return 1;
             }

chap10/tls_time_server.c

@@ -113,7 +113,7 @@ int main() {
 
 
         SSL *ssl = SSL_new(ctx);
-        if (!ctx) {
+        if (!ssl) {
             fprintf(stderr, "SSL_new() failed.\n");
             return 1;
         }