asyncmacro: add nnkSym support for getName() (#9204)

Fixes #9201

lib/pure/asyncmacro.nim

@@ -190,7 +190,7 @@ proc getName(node: NimNode): string {.compileTime.} =
   case node.kind
   of nnkPostfix:
     return node[1].strVal
-  of nnkIdent:
+  of nnkIdent, nnkSym:
     return node.strVal
   of nnkEmpty:
     return "anonymous"

tests/async/t9201.nim

@@ -0,0 +1,14 @@
+discard """
+  exitcode: 0
+"""
+
+# Derived from issue #9201
+import asyncdispatch, macros
+
+macro newAsyncProc(name: untyped): untyped =
+  expectKind name, nnkStrLit
+  let pName = genSym(nskProc, name.strVal)
+  result = getAst async quote do:
+    proc `pName`() = discard
+
+newAsyncProc("hello")