Add regex fix

Author: wvu

lib/msf/core/db.rb

@@ -2972,10 +2972,10 @@ def import_filetype_detect(data)
 		elsif (firstline.index("<scanJob>"))
 			@import_filedata[:type] = "Retina XML"
 			return :retina_xml
-		elsif (firstline.index("<get_reports_response status=\"200\" status_text=\"OK\">"))
+		elsif (firstline =~ /<get_reports_response status=['"]200['"] status_text=['"]OK['"]>/)
 			@import_filedata[:type] = "OpenVAS XML"
 			return :openvas_new_xml
-		elsif (firstline.index("<report id=\"") or firstline.index("<report id=\'"))
+		elsif (firstline =~ /<report id=['"]/)
 			@import_filedata[:type] = "OpenVAS XML"
 			return :openvas_new_xml
 		elsif (firstline.index("<NessusClientData>"))