[1.8>master] [MERGE #4403 @tcare] Fix TVS bug in UriHelper

Merge pull request #4403 from tcare:prefasturi

Fixes OS: 14980718

We already have a pragma, but the current one will only work for the following line, and not between the two directives as intended. Change to disable.

lib/Runtime/Library/UriHelper.cpp

@@ -225,7 +225,7 @@ namespace Js
                 uint32 utfLen = ToUTF8(uVal, bUTF8);
                 for( uint32 j = 0; j < utfLen; j++ )
                 {
-#pragma prefast(suppress: 26014, "buffer length was calculated earlier");
+#pragma prefast(disable: 26014, "buffer length was calculated earlier");
                     BYTE val = bUTF8[j];
                     *outCurrent++ = _u('%');
                     *outCurrent++ = hexStream[(val >> 4)];