Bump liberty

.gitmodules

@@ -1,3 +1,3 @@
 [submodule "liberty"]
 	path = liberty
-	url = https://github.com/pjanouch/liberty.git
+	url = https://git.janouch.name/p/liberty.git

CMakeLists.txt

@@ -4,7 +4,7 @@ cmake_minimum_required (VERSION 2.8.11)
 # Moar warnings
 if ("${CMAKE_C_COMPILER_ID}" MATCHES "GNU" OR CMAKE_COMPILER_IS_GNUCC)
 	# -Wunused-function is pretty annoying here, as everything is static
-	set (wdisabled "-Wno-unused-function -Wno-implicit-fallthrough")
+	set (wdisabled "-Wno-unused-function")
 	set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99 -Wall -Wextra ${wdisabled}")
 endif ("${CMAKE_C_COMPILER_ID}" MATCHES "GNU" OR CMAKE_COMPILER_IS_GNUCC)