Handle null case for $lastInstance

Author: iquito

src/Debug.php

@@ -92,7 +92,7 @@ public static function createException(
          * @var OriginException $exception At this point we know that $exceptionClass inherits from OriginException for sure
          */
         $exception = new $exceptionClass(
-            $shownClass . $lastInstance['type'] . $lastInstance['function'] .
+            $shownClass . ( $lastInstance['type'] ?? '' ) . ( $lastInstance['function'] ?? '' ) .
             '(' . self::sanitizeArguments($lastInstance['args'] ?? []) . ')',
             $lastInstance['file'] ?? '',
             $lastInstance['line'] ?? 0,

tests/DebugTest.php

@@ -26,7 +26,7 @@ public function testCreateException()
             $this->assertEquals(__FILE__, $e->getFile());
             $this->assertEquals(__LINE__-8, $e->getLine());
             $this->assertEquals($debugClassPath, $e->getExceptionFile());
-            $this->assertEquals(95, $e->getExceptionLine());
+            $this->assertEquals(94, $e->getExceptionLine());
             $this->assertEquals('SomeClass->someFunction()', $e->getOriginCall());
         }
     }