Add explicit test case for EOF during whitespace
diff --git a/unquote_test.go b/unquote_test.go
index c4b076a..19c10d9 100644
--- a/unquote_test.go
+++ b/unquote_test.go
@@ -51,4 +51,5 @@
 	{"'test'\\''ing", UnterminatedSingleQuoteError},
 	{"\"foo'bar", UnterminatedDoubleQuoteError},
 	{"foo\\", UnterminatedEscapeError},
+	{"   \\", UnterminatedEscapeError},
 }