Suppress the validation error LGHT0217 in WiX.

BUG=none
TEST=none

Author: hiroyuki-komatsu

src/mozc_version_template.txt

@@ -1,6 +1,6 @@
 MAJOR=2
 MINOR=17
-BUILD=2093
+BUILD=2094
 REVISION=102
 # NACL_DICTIONARY_VERSION is the target version of the system dictionary to be
 # downloaded by NaCl Mozc.

src/win32/installer/wix.gypi

@@ -177,6 +177,8 @@
         # We intentionally remove *.ime from system folders as a part
         # of uninstallation.
         '-sice:ICE09',
+        # Suppress the validation to address the LGHT0217 error.
+        '-sval',
         '-o', '<@(_outputs)',
         # We do not use '<@(_inputs)' here because it contains some
         # input files just for peoper rebiuld condition.