Added sanity check to disallow --speed-only in combination with -i

docs/changes.txt

@@ -17,6 +17,7 @@
 ## Technical
 ##
 
+- Sanity: Added sanity check to disallow --speed-only in combination with -i
 - Potfile: In v3.10 already, the default potfile suffix changed but the note about was missing. The "hashcat.pot" became "hashcat.potfile"
 - Threads: Replaced all calls to strerror() with %m printf() GNU extension to ensure thread safety
 - Threads: Replaced all calls to ctime() with ctime_r() to ensure thread safety

src/user_options.c

@@ -465,6 +465,13 @@ int user_options_sanity (hashcat_ctx_t *hashcat_ctx)
     return -1;
   }
 
+  if ((user_options->increment == true) && (user_options->speed_only == true))
+  {
+    event_log_error (hashcat_ctx, "Increment is not allowed in combination with --speed-only");
+
+    return -1;
+  }
+
   if ((user_options->increment == true) && (user_options->attack_mode == ATTACK_MODE_STRAIGHT))
   {
     event_log_error (hashcat_ctx, "Increment is not allowed in attack-mode 0");
@@ -1069,6 +1076,10 @@ void user_options_preprocess (hashcat_ctx_t *hashcat_ctx)
     else if (user_options->opencl_info == true)
     {
 
+    }
+    else if (user_options->speed_only == true)
+    {
+
     }
     else if (user_options->keyspace == true)
     {