Fix building android gn

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index 2caf0c0fc391a3f05ba65f7f8889acbb3dca1606..2fe4579f15e73e132de3f4f652642ec52f519229 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -976,8 +976,14 @@ executable("mksnapshot") {
     ":v8_nosnapshot",
   ]
 
+  libs = []
+
   if (v8_compress_startup_data == "bz2") {
-    libs = [ "bz2" ]
+    libs += [ "bz2" ]
+  }
+
+  if (is_android && current_toolchain != host_toolchain) {
+    libs += [ "log" ]
   }
 }
 
@@ -1004,10 +1010,6 @@ component("v8") {
     ]
   }
 
-  if (is_android && current_toolchain != host_toolchain) {
-    libs = [ "log" ]
-  }
-
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [ "//build/config/compiler:no_chromium_code" ]
   configs += [ ":internal_config", ":features", ":toolchain" ]