Change: Use gender-neutral pronouns in console command messages (and comments) (#9203)

src/saveload/ai_sl.cpp

@@ -98,7 +98,7 @@ static void Load_AIPL()
 					DEBUG(script, 0, "The savegame has an AI by the name '%s', version %d which is no longer available.", _ai_saveload_name, _ai_saveload_version);
 					DEBUG(script, 0, "The latest version of that AI has been loaded instead, but it'll not get the savegame data as it's incompatible.");
 				}
-				/* Make sure the AI doesn't get the saveload data, as he was not the
+				/* Make sure the AI doesn't get the saveload data, as it was not the
 				 *  writer of the saveload data in the first place */
 				_ai_saveload_version = -1;
 			}

src/saveload/game_sl.cpp

@@ -90,7 +90,7 @@ static void Load_GSDT()
 				DEBUG(script, 0, "The savegame has an GameScript by the name '%s', version %d which is no longer available.", _game_saveload_name, _game_saveload_version);
 				DEBUG(script, 0, "The latest version of that GameScript has been loaded instead, but it'll not get the savegame data as it's incompatible.");
 			}
-			/* Make sure the GameScript doesn't get the saveload data, as he was not the
+			/* Make sure the GameScript doesn't get the saveload data, as it was not the
 			 *  writer of the saveload data in the first place */
 			_game_saveload_version = -1;
 		}

src/saveload/saveload.h

@@ -313,7 +313,7 @@ enum SaveLoadVersion : uint16 {
 	 * cannot digest. But, this gives for ugly errors. As we have plenty of
 	 * versions anyway, we simply skip the versions we know belong to
 	 * patchpacks. This way we can present the user with a clean error
-	 * indicate he is loading a savegame from a patchpack.
+	 * indicate they are loading a savegame from a patchpack.
 	 * For future patchpack creators: please follow a system like JGRPP, where
 	 * the version is masked with 0x8000, and the true version is stored in
 	 * its own chunk with feature toggles.