Fix format warnings caused by g_writeln("")

keygen/keygen.c

@@ -195,11 +195,11 @@ static tui8 g_testkey2048[376] = /* 2048 bit test key */
 static int APP_CC
 out_params(void)
 {
-    g_writeln("");
+    g_writeln("%s", "");
     g_writeln("xrdp rsa key gen utility examples");
     g_writeln("  xrdp-keygen xrdp ['path and file name' | auto] [512 or 2048]");
     g_writeln("  xrdp-keygen test");
-    g_writeln("");
+    g_writeln("%s", "");
     return 0;
 }
 
@@ -351,7 +351,7 @@ save_all(char *e_data, int e_len, char *n_data, int n_len,
     }
 
     g_writeln("saving to %s", filename);
-    g_writeln("");
+    g_writeln("%s", "");
 
     if (g_file_exist(filename))
     {
@@ -411,9 +411,9 @@ key_gen(const char *path_and_file_name)
     d_len = n_len;
     sign_len = 64;
     error = 0;
-    g_writeln("");
+    g_writeln("%s", "");
     g_writeln("Generating %d bit rsa key...", g_key_size_bits);
-    g_writeln("");
+    g_writeln("%s", "");
 
     if (error == 0)
     {
@@ -428,7 +428,7 @@ key_gen(const char *path_and_file_name)
     if (error == 0)
     {
         g_writeln("ssl_gen_key_xrdp1 ok");
-        g_writeln("");
+        g_writeln("%s", "");
         error = sign_key(e_data, e_len, n_data, n_len, sign_data, sign_len);
 
         if (error != 0)
@@ -588,10 +588,10 @@ main(int argc, char **argv)
         }
         else if (g_strcasecmp(argv[1], "test") == 0)
         {
-            g_writeln("");
+            g_writeln("%s", "");
             g_writeln("testing 512 bit key");
             key_test512();
-            g_writeln("");
+            g_writeln("%s", "");
             g_writeln("testing 2048 bit key");
             key_test2048();
             return 0;