Fix detection for fully qualified return type

Author: julienfalque

src/Tokenizer/TokensAnalyzer.php

@@ -331,7 +331,7 @@ public function isConstantInvocation($index)
             $prevIndex = $this->tokens->getPrevMeaningfulToken($prevIndex);
         }
 
-        if ($this->tokens[$prevIndex]->isGivenKind([CT::T_CONST_IMPORT, T_EXTENDS, CT::T_FUNCTION_IMPORT, T_IMPLEMENTS, T_INSTANCEOF, T_INSTEADOF, T_NAMESPACE, T_NEW, CT::T_NULLABLE_TYPE, T_USE, CT::T_USE_TRAIT])) {
+        if ($this->tokens[$prevIndex]->isGivenKind([CT::T_CONST_IMPORT, T_EXTENDS, CT::T_FUNCTION_IMPORT, T_IMPLEMENTS, T_INSTANCEOF, T_INSTEADOF, T_NAMESPACE, T_NEW, CT::T_NULLABLE_TYPE, CT::T_TYPE_COLON, T_USE, CT::T_USE_TRAIT])) {
             return false;
         }
 

tests/Tokenizer/TokensAnalyzerTest.php

@@ -852,6 +852,10 @@ public function provideIsConstantInvocation71Cases()
                 '<?php interface Foo { public function bar(): Baz; }',
                 [16 => false],
             ],
+            [
+                '<?php interface Foo { public function bar(): \Baz; }',
+                [17 => false],
+            ],
             [
                 '<?php interface Foo { public function bar(): ?Baz; }',
                 [17 => false],