more mem leak fixes

mbuni/ChangeLog

@@ -1,5 +1,6 @@
 2011-10-11 P. A. Bagyenda <bagyenda@dsmagic.com>
 	* Fixed mem leaks in mmsc uaprof module
+	* Fixed mem leak in get_content_type function
 2011-10-03 P. A. Bagyenda <bagyenda@dsmagic.com>
 	* Fixed: compilation issue
 2011-09-23 P. A. Bagyenda <bagyenda@dsmagic.com>

mbuni/mmlib/mms_util.c

@@ -2922,7 +2922,8 @@ void get_content_from_sendmms_request(Octstr *body, List *headers, List *cgivars
 	  Octstr *reply = NULL, *params = NULL;
 		    
 	  http_header_add(reqh, "User-Agent", MM_NAME "/" VERSION);	       
-	  
+
+	  *ctype = NULL;
 	  if (mms_url_fetch_content(HTTP_METHOD_GET, s, reqh, NULL, &rph, &reply) == HTTP_OK)
 	       get_content_type(rph, ctype, &params);
 	  else 
@@ -2935,7 +2936,8 @@ void get_content_from_sendmms_request(Octstr *body, List *headers, List *cgivars
 	  http_destroy_headers(reqh);
 	  http_destroy_headers(*rh);
 	  *rh = rph ? rph : http_create_empty_headers(); /* replace as real reply headers. */
-	  *ctype = http_header_value(*rh, octstr_imm("Content-Type"));
+	  if (*ctype == NULL)
+	       *ctype = http_header_value(*rh, octstr_imm("Content-Type"));
 	  octstr_destroy(params);
      } else if ((s = http_cgi_variable(cgivars, "content")) != NULL) { /* any content. */		    
 	  Octstr *_xctype = NULL; /* ... because cgi var stuff is destroyed elsewhere, we must dup it !! */