From: Dan Moseley <danmose@microsoft.com>
Date: Wed, 16 Nov 2016 20:55:45 +0000 (-0800)
Subject: Fixed string Join method
X-Git-Tag: submit/tizen/20210909.063632~11030^2~8880
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a9d311cd948dea19362ec9a40954795ca2a8d182;p=platform%2Fupstream%2Fdotnet%2Fruntime.git

Fixed string Join method

Fixed string Join(string separator, params object[] values) method.
Calling string.Join(",", null, 1, 2, 3); return empty string but should ",1,2,3".

Commit migrated from https://github.com/dotnet/coreclr/commit/b6e5a7fd2deaf73cb45ad82474b9e4beee7883a4
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a9d311cd948dea19362ec9a40954795ca2a8d182