Allow textures and samplers in phony assignment

wgsl/index.bs

@@ -4910,7 +4910,7 @@ The right-hand side is evaluated, and then ignored.
   </thead>
   <tr algorithm="phony-assignment">
     <td>|e|: |T|,<br>
-        |T| is [=constructible=], or a [=pointer type=]
+        |T| is [=constructible=], a [=pointer type=], a [=texture=] type, or a [=sampler=] type
     <td class="nowrap">_ = |e|
     <td>Evaluates |e|.
 
@@ -4924,7 +4924,7 @@ A phony-assignment is useful for:
 * [=statically accessed|Statically accessing=] a variable, thus establishing it as a part of
     the [=resource interface of a shader|shader's resource interface=].
 
-    Note: A variable's store type may not be constructible, e.g. it contains an atomic type, or a runtime-sized array.
+    Note: A buffer variable's store type may not be constructible, e.g. it contains an atomic type, or a runtime-sized array.
     In these cases, use a pointer to the variable's contents instead.
 
 <div class='example wgsl global-scope' heading='Using phony-assignment to throw away an un-needed function result'>
@@ -4960,8 +4960,8 @@ A phony-assignment is useful for:
       // Declare that buf, t, and s are part of the shader interface, without
       // using them for anything.
       _ = &buf;
-      _ = &t;
-      _ = &s;
+      _ = t;
+      _ = s;
       return vec4<f32>();
     }
   </xmp>