Fix #1337 - don’t crash when examining __call methods in initialisation checks

src/Psalm/Internal/Analyzer/Statements/Expression/CallAnalyzer.php

@@ -139,7 +139,8 @@ class CallAnalyzer
                 }
 
                 if (!$declaring_method_id) {
-                    throw new \UnexpectedValueException('Could not find declaring method for ' . $method_id);
+                    // can happen for __call
+                    return;
                 }
             }
 

tests/PropertyTypeTest.php

@@ -2157,6 +2157,20 @@ class PropertyTypeTest extends TestCase
                     }',
                 'error_message' => 'PossiblyNullArgument'
             ],
+            'noCrashOnMagicCall' => [
+                '<?php
+                    class A {
+                        /** @var string */
+                        private $a;
+
+                        public function __construct() {
+                            $this->setA();
+                        }
+
+                        public function __call(string $var, array $args) {}
+                    }',
+                'error_message' => 'PropertyNotSetInConstructor'
+            ],
         ];
     }
 }