Remove -Werror from pre-set flags

Author: zrax

CMakeLists.txt

@@ -17,7 +17,7 @@ cmake_minimum_required(VERSION 3.1)
 project(gsshvnc)
 
 set(CMAKE_CXX_STANDARD 14)
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Werror")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra")
 
 # GCC 8 introduces these warnings which break gtkmm/sigc++
 if(CMAKE_COMPILER_IS_GNUCXX AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 8.0)