libziparchive: move the array of error strings into the implementation.

Test: treehugger
Change-Id: Iaffc29f77912d268c3335b74eb712a58914ce945
diff --git a/libziparchive/Android.bp b/libziparchive/Android.bp
index 3d4e86e..4081b21 100644
--- a/libziparchive/Android.bp
+++ b/libziparchive/Android.bp
@@ -61,6 +61,7 @@
         "zip_archive.cc",
         "zip_archive_stream_entry.cc",
         "zip_cd_entry_map.cc",
+        "zip_error.cpp",
         "zip_writer.cc",
     ],