Index: main/utils.c
===================================================================
--- main/utils.c	(revision 357574)
+++ main/utils.c	(working copy)
@@ -1755,8 +1755,6 @@
 
 	needed = vsnprintf(target, available, format, ap1) + 1;
 
-	va_end(ap1);
-
 	if (needed > available) {
 		/* the allocation could not be satisfied using the field's current allocation
 		   (if it has one), or the space available in the pool (if it does not). allocate
@@ -1798,8 +1796,8 @@
 
 	__ast_string_field_ptr_build_va(mgr, pool_head, ptr, format, ap1, ap2);
 
-	va_end(ap1);
 	va_end(ap2);
+	va_end(ap1);
 }
 
 void *__ast_calloc_with_stringfields(unsigned int num_structs, size_t struct_size, size_t field_mgr_offset,