[icu] Support loading data file from default location

src/snapshot/mksnapshot.cc

Index: src/snapshot/mksnapshot.cc
diff --git a/src/snapshot/mksnapshot.cc b/src/snapshot/mksnapshot.cc
index c38f92f5b17795ab9a5a25c9a399b4d1bb6caeb4..f4362e5077e1231e2e57ccaf06ccc9769ebaae61 100644
--- a/src/snapshot/mksnapshot.cc
+++ b/src/snapshot/mksnapshot.cc
@@ -150,7 +150,7 @@ int main(int argc, char** argv) {
   }
 
   i::CpuFeatures::Probe(true);
-  V8::InitializeICU();
+  V8::InitializeICUDefaultLocation(argv[0]);
   v8::Platform* platform = v8::platform::CreateDefaultPlatform();
   v8::V8::InitializePlatform(platform);
   v8::V8::Initialize();