phpstan: 0.12.3 fixes for master

tests/phpstan/configs/phpstan-bugs.neon

@@ -53,6 +53,11 @@ parameters:
 			count: 1
 			path: ../../../src/item/ItemFactory.php
 
+		-
+			message: "#^If condition is always false\\.$#"
+			count: 1
+			path: ../../../src/item/ItemFactory.php
+
 		-
 			message: "#^Cannot access offset int on Ds\\\\Deque&iterable\\<pocketmine\\\\item\\\\WritableBookPage\\>\\.$#"
 			count: 2
@@ -69,29 +74,7 @@ parameters:
 			count: 1
 			path: ../../../src/network/mcpe/protocol/types/entity/EntityMetadataCollection.php
 
-		-
-			message: "#^Instanceof between int and PharFileInfo will always evaluate to false\\.$#"
-			count: 1
-			path: ../../../src/plugin/PharPluginLoader.php
-
 		-
 			message: "#^Strict comparison using \\=\\=\\= between int\\<1, max\\> and 0 will always evaluate to false\\.$#"
 			count: 1
 			path: ../../../src/utils/Config.php
-
-		-
-			#ReflectionFunction::getClosureThis() should be nullable
-			message: "#^Else branch is unreachable because ternary operator condition is always true\\.$#"
-			count: 1
-			path: ../../../src/utils/Utils.php
-
-		-
-			#ReflectionFunction::getClosureScopeClass() should be nullable
-			message: "#^Unreachable statement \\- code above always terminates\\.$#"
-			count: 1
-			path: ../../../src/utils/Utils.php
-
-		-
-			message: "#^Strict comparison using \\=\\=\\= between int\\<min, 3\\> and 4 will always evaluate to false\\.$#"
-			count: 1
-			path: ../../../src/world/World.php