SlevomatCodingStandard.Variables.UnusedVariable: Fixed false positive

Author: kukulich

SlevomatCodingStandard/Sniffs/Variables/UnusedVariableSniff.php

@@ -42,6 +42,7 @@
 use const T_HEREDOC;
 use const T_IF;
 use const T_INC;
+use const T_INLINE_ELSE;
 use const T_LIST;
 use const T_MINUS_EQUAL;
 use const T_MOD_EQUAL;
@@ -464,6 +465,11 @@ private function isUsedInLoopCycle(File $phpcsFile, int $variablePointer, string
 				continue;
 			}
 
+			$previousPointer = TokenHelper::findPreviousEffective($phpcsFile, $i - 1);
+			if ($tokens[$previousPointer]['code'] === T_INLINE_ELSE) {
+				return true;
+			}
+
 			$parenthesisOwnerPointer = $this->findNestedParenthesisWithOwner($phpcsFile, $i);
 			if (
 				$parenthesisOwnerPointer !== null

tests/Sniffs/Variables/data/unusedVariableNoErrors.php

@@ -434,3 +434,10 @@ function ($i) {
 function ($i) {
 	yield ++$i;
 };
+
+function () {
+	$numericIndex = 0;
+	while (true) {
+	    return null ?: $numericIndex++;
+	}
+};