mxshadowsrv: Avoid redundant error messages

mxshadowsrv.c

@@ -152,18 +152,13 @@ static void process_client(int socket) {
     if (ssl == NULL) { psslerror("SSL_new"); return; }
     SSL_set_fd(ssl, socket);
     if (ssl_accept_with_timeout(ssl, socket, TIMEOUT) <= 0) {
-        perror("accept");
         return;
     }
 
     char buf[64];
     int len = ssl_read_with_timeout(ssl, socket, buf, sizeof(buf), TIMEOUT);
-    if (len == 0)
+    if (len <= 0 )
         return;
-    if (len < 0) {
-        perror("read");
-        return;
-    }
     if (len == sizeof(buf)) {
         fprintf(stderr, "identifier to long\n");
         SSL_shutdown(ssl);
@@ -180,11 +175,8 @@ static void process_client(int socket) {
     status = pthread_mutex_unlock(&shadow_mutex);
     if (status != 0) { errno = status; perror("pthread_mutex_unlock"); exit(1);}
 
-    if (line_len) {
-        int status = ssl_write_with_timeout(ssl, socket, line, line_len, TIMEOUT);
-        if (status == -1)
-            perror("write");
-    }
+    if (line_len)
+        ssl_write_with_timeout(ssl, socket, line, line_len, TIMEOUT);
     SSL_shutdown(ssl);
 }