script HTML parser error fix, corrects bug #319715 added test from Michael

* HTMLparser.c: script HTML parser error fix, corrects bug #319715
* result/HTML/53867* test/HTML/53867.html: added test from Michael Day
  to the regression suite
Daniel
diff --git a/result/HTML/53867.html b/result/HTML/53867.html
new file mode 100644
index 0000000..acdad7c
--- /dev/null
+++ b/result/HTML/53867.html
@@ -0,0 +1,66 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
+<html><head><style>
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+</style></head></html>