UselessSemicolonSniff: Fixed internal error

Author: kukulich

SlevomatCodingStandard/Sniffs/PHP/UselessSemicolonSniff.php

@@ -6,6 +6,7 @@
 use PHP_CodeSniffer\Sniffs\Sniff;
 use SlevomatCodingStandard\Helpers\TokenHelper;
 use function array_key_exists;
+use function count;
 use function in_array;
 use const T_ANON_CLASS;
 use const T_CLOSE_CURLY_BRACKET;
@@ -148,7 +149,7 @@ private function removeUselessSemicolon(File $phpcsFile, int $semicolonPointer):
 		} while (true);
 
 		$fixEndPointer = $semicolonPointer;
-		do {
+		while ($fixEndPointer < count($tokens) - 1) {
 			if ($tokens[$fixEndPointer + 1]['code'] !== T_WHITESPACE) {
 				break;
 			}
@@ -158,7 +159,7 @@ private function removeUselessSemicolon(File $phpcsFile, int $semicolonPointer):
 			}
 
 			$fixEndPointer++;
-		} while (true);
+		}
 
 		$phpcsFile->fixer->beginChangeset();
 		for ($i = $fixStartPointer; $i <= $fixEndPointer; $i++) {