LINT: Switch whitelist check from egrep to awk

Bonus: make CI happy with the last rules fix

src/client/keys.h

@@ -25,7 +25,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 class KeyType
 {
 public:
-	enum T {
+	enum T
+	{
 		// Player movement
 		FORWARD,
 		BACKWARD,

src/environment.cpp

@@ -26,6 +26,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "daynightratio.h"
 #include "emerge.h"
 
+
 Environment::Environment(IGameDef *gamedef):
 	m_time_of_day_speed(0),
 	m_time_of_day(9000),

src/gameparams.h

@@ -24,7 +24,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 struct SubgameSpec;
 
-struct GameParams {
+struct GameParams
+{
 	u16 socket_port;
 	std::string world_path;
 	SubgameSpec game_spec;

src/gettime.h

@@ -31,7 +31,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 		Normal build: main.cpp
 		Server build: servermain.cpp
 */
-enum TimePrecision {
+enum TimePrecision
+{
 	PRECISION_SECONDS = 0,
 	PRECISION_MILLI,
 	PRECISION_MICRO,

src/script/lua_api/l_client.cpp

@@ -212,8 +212,8 @@ int ModApiClient::l_sound_play(lua_State *L)
 		if (!lua_isnil(L, -1)) {
 			v3f pos = read_v3f(L, -1) * BS;
 			lua_pop(L, 1);
-			handle =
-			    sound->playSoundAt(spec.name, looped, gain * spec.gain, pos);
+			handle = sound->playSoundAt(
+					spec.name, looped, gain * spec.gain, pos);
 			lua_pushinteger(L, handle);
 			return 1;
 		}