From 34270f2333c8fb103081c39d4a702e5daa8f94f9 Mon Sep 17 00:00:00 2001
From: Thomas Fussell <thomas.fussell@gmail.com>
Date: Wed, 27 Sep 2017 17:39:59 -0400
Subject: [PATCH] specify return type of lambda to prevent compiler error

---
 source/detail/serialization/xlsx_producer.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/detail/serialization/xlsx_producer.cpp b/source/detail/serialization/xlsx_producer.cpp
index e181960e..346b22f0 100644
--- a/source/detail/serialization/xlsx_producer.cpp
+++ b/source/detail/serialization/xlsx_producer.cpp
@@ -2455,7 +2455,7 @@ void xlsx_producer::write_worksheet(const relationship &rel)
         write_start_element(xmlns, "pageMargins");
 
         // TODO: there must be a better way to do this
-        auto remove_trailing_zeros = [](const std::string &n) {
+        auto remove_trailing_zeros = [](const std::string &n) -> std::string {
             auto decimal = n.find('.');
 
             if (decimal == std::string::npos) return n;