always evaluate block.super even if it is not used

Tests/StencilTests/EnvironmentSpec.swift

@@ -320,7 +320,7 @@ final class EnvironmentBaseAndChildTemplateTests: XCTestCase {
     baseTemplate = try environment.loadTemplate(name: "invalid-base.html")
 
     try expectError(reason: "filter error",
-                    childToken: "block.super",
+                    childToken: "extends \"invalid-base.html\"",
                     baseToken: "target|unknown")
   }
 

Tests/StencilTests/InheritanceSpec.swift

@@ -32,5 +32,24 @@ final class InheritanceTests: XCTestCase {
         Child_Body
         """
     }
+
+    it("can render block.super in if tag") {
+      let template = try self.environment.loadTemplate(name: "if-block-child.html")
+
+      try expect(try template.render(["sort": "new"])) == """
+      Title - Nieuwste spellen
+
+      """
+
+      try expect(try template.render(["sort": "upcoming"])) == """
+      Title - Binnenkort op de agenda
+
+      """
+
+      try expect(try template.render(["sort": "near-me"])) == """
+      Title - In mijn buurt
+
+      """
+    }
   }
 }

Tests/StencilTests/fixtures/if-block-child.html

@@ -0,0 +1,2 @@
+{% extends "if-block.html" %}
+{% block title %}{% if sort == "new" %}{{ block.super }} - Nieuwste spellen{% elif sort == "upcoming" %}{{ block.super }} - Binnenkort op de agenda{% elif sort == "near-me" %}{{ block.super }} - In mijn buurt{% endif %}{% endblock %}

Tests/StencilTests/fixtures/if-block.html

@@ -0,0 +1 @@
+{% block title %}Title{% endblock %}