luci-app-statistics: escape backslashes as well

Fixes: bab4a3ef ("luci-app-statistics - allow rrd files to contain :")
Signed-off-by: Jo-Philipp Wich <jo@mein.io>

diff --git a/applications/luci-app-statistics/luasrc/statistics/rrdtool.lua b/applications/luci-app-statistics/luasrc/statistics/rrdtool.lua
index 29090eed8faf98f0f67672f0eea762eae3d5c324..4586b23caa3b50c00bedcb28d13a5a865cf25924 100644 (file)
--- a/applications/luci-app-statistics/luasrc/statistics/rrdtool.lua
+++ b/applications/luci-app-statistics/luasrc/statistics/rrdtool.lua
@@ -62,7 +62,7 @@ function Graph._mkpath( self, plugin, plugin_instance, dtype, dtype_instance )
 end
 
 function Graph.mkrrdpath( self, ... )
-       return string.format( "%s/%s.rrd", self.opts.rrdpath, string.gsub(self:_mkpath( ... ), ":", "\\:") )
+       return string.format( "%s/%s.rrd", self.opts.rrdpath, self:_mkpath( ... ):gsub("\\", "\\\\"):gsub(":", "\\:") )
 end
 
 function Graph.mkpngpath( self, ... )