Various fixes to make travis happier

Take out the clag to suppress warnings for lua in clang as it's not needed.
Make cmake builds in travis verbose.
Fix uninitialised variables that clang picks up on in cmake builds.

.travis.yml

@@ -61,7 +61,7 @@ script:
     - ./utils/travis/utf8_bom_dog.sh
     - $CXX --version
     - if [ "$USE_CMAKE" = false ]; then scons cxxtool=$CXX --debug=time build=release extra_flags_config=-pipe extra_flags_release="$EXTRA_FLAGS_RELEASE" strict=$STRICT_COMPILATION $TARGETS cxx_std=$CXXSTD nls=$NLS jobs=2; fi
-    - if [ "$USE_CMAKE" = true ]; then cmake . -DENABLE_STRICT_COMPILATION=$STRICT_COMPILATION -DENABLE_NLS=$NLS -DENABLE_TESTS=$CPP_TESTS && make -j2; fi
+    - if [ "$USE_CMAKE" = true ]; then cmake . -DENABLE_STRICT_COMPILATION=$STRICT_COMPILATION -DENABLE_NLS=$NLS -DENABLE_TESTS=$CPP_TESTS && make VERBOSE=1 -j2; fi
     - "export DISPLAY=:99.0"
     - "/sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_99.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :99 -ac -screen 0 1024x768x24"
     - if [ "$CPP_TESTS" = true ]; then ./utils/travis/test_wrapper.sh; fi

src/CMakeLists.txt

@@ -361,7 +361,7 @@ if(UNIX AND NOT CMAKE_COMPILER_IS_GNUCXX)
 	set_source_files_properties(
 		${libwesnoth-lua_STAT_SRC}
 		PROPERTIES COMPILE_FLAGS
-			"-x c++ -Wno-parentheses-equality -Wno-conditional-uninitialized"
+			"-x c++ -Wno-parentheses-equality"
 	)
 endif(UNIX AND NOT CMAKE_COMPILER_IS_GNUCXX)
 

src/scripting/game_lua_kernel.cpp

@@ -4047,7 +4047,7 @@ int game_lua_kernel::intf_set_time_of_day(lua_State * L)
 		return 0;
 	}
 	std::string area_id;
-	size_t area_i;
+	size_t area_i = 0;
 	if (lua_isstring(L, 2)) {
 		area_id = lua_tostring(L, 1);
 		std::vector<std::string> area_ids = tod_man().get_area_ids();

src/server/server.cpp

@@ -445,7 +445,8 @@ void server::handle_termination(const boost::system::error_code& error, int sign
 
 	const char* signame;
 	if(signal_number == SIGINT) signame = "SIGINT";
-	if(signal_number == SIGTERM) signame = "SIGTERM";
+	else if(signal_number == SIGTERM) signame = "SIGTERM";
+	else signame = lexical_cast<std::string>(signal_number).c_str();
 	LOG_SERVER << signame << " caught, exiting without cleanup immediately.\n";
 	exit(128 + signal_number);
 }