uhttpd: disable concurrent requests by default

In order to avoid straining CPU and memory resources on lower end devices,
avoid running multiple CGI requests in parallel.

Ref: https://forum.openwrt.org/t/high-load-fix-on-openwrt-luci/29006
Signed-off-by: Jo-Philipp Wich <jo@mein.io>

package/network/services/uhttpd/Makefile

@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=uhttpd
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(PROJECT_GIT)/project/uhttpd.git

package/network/services/uhttpd/files/uhttpd.config

@@ -24,7 +24,7 @@ config uhttpd main
 	# If this number is exceeded, further requests are
 	# queued until the number of running requests drops
 	# below the limit again.
-	option max_requests 3
+	option max_requests 1
 
 	# Maximum number of concurrent connections.
 	# If this number is exceeded, further TCP connection