Simplified the code within curl_easy_perform() that calls Curl_perform().

Pointed out by Bjorn Reese.

lib/easy.c

@@ -308,49 +308,19 @@ CURL *curl_easy_init(void)
  * curl_easy_setopt() is the external interface for setting options on an
  * easy handle.
  */
-typedef int (*func_T)(void);
+
 CURLcode curl_easy_setopt(CURL *curl, CURLoption tag, ...)
 {
   va_list arg;
-  func_T param_func = (func_T)0;
-  long param_long = 0;
-  void *param_obj = NULL;
-  curl_off_t param_offset = 0;
   struct SessionHandle *data = curl;
-  CURLcode ret=CURLE_FAILED_INIT;
+  CURLcode ret;
 
   if(!curl)
     return CURLE_BAD_FUNCTION_ARGUMENT;
 
   va_start(arg, tag);
 
-  /* PORTING NOTE:
-     Object pointers can't necessarily be casted to function pointers and
-     therefore we need to know what type it is and read the correct type
-     at once. This should also correct problems with different sizes of
-     the types.
-  */
-
-  if(tag < CURLOPTTYPE_OBJECTPOINT) {
-    /* This is a LONG type */
-    param_long = va_arg(arg, long);
-    ret = Curl_setopt(data, tag, param_long);
-  }
-  else if(tag < CURLOPTTYPE_FUNCTIONPOINT) {
-    /* This is a object pointer type */
-    param_obj = va_arg(arg, void *);
-    ret = Curl_setopt(data, tag, param_obj);
-  }
-  else if(tag < CURLOPTTYPE_OFF_T) {
-    /* This is a function pointer type */
-    param_func = va_arg(arg, func_T );
-    ret = Curl_setopt(data, tag, param_func);
-  }
-  else {
-    /* This is a curl_off_t type */
-    param_offset = va_arg(arg, curl_off_t);
-    ret = Curl_setopt(data, tag, param_offset);
-  }
+  ret = Curl_setopt(data, tag, arg);
 
   va_end(arg);
   return ret;