Update winwebdiff to 1.0.6 (2)

diff --git a/Externals/winwebdiff b/Externals/winwebdiff
index bab67e2..4a7715c 160000 (submodule)
--- a/Externals/winwebdiff
+++ b/Externals/winwebdiff
@@ -1 +1 @@
-Subproject commit bab67e2db06fde689b6a7a09c25a6a409dd67257
+Subproject commit 4a7715ca93e5dff9ea6054b5b068d0ebeb975265