crash when compile PropertyAccessExpression

[HerrCai0907]

Bug description

Whoops, the AssemblyScript compiler has crashed during compile :-(
▌
▌ Here is the stack trace hinting at the problem, perhaps it's useful?
▌
▌ /Users/q540239/oss/assemblyscript/std/portable/index.js:216
▌ throw new AssertionError(message);
▌ ^
▌
▌ AssertionError: assertion failed
▌ at Y.assert (/Users/q540239/oss/assemblyscript/std/portable/index.js:216:11)
▌ at Kn.resolveFunction (/Users/q540239/oss/assemblyscript/src/resolver.ts:2826:7)
▌ at jr.compilePropertyAccessExpression (/Users/q540239/oss/assemblyscript/src/compiler.ts:9039:46)
▌ at jr.compileExpression (/Users/q540239/oss/assemblyscript/src/compiler.ts:3401:21)
▌ at jr.compileExpressionStatement (/Users/q540239/oss/assemblyscript/src/compiler.ts:2482:17)
▌ at jr.compileStatement (/Users/q540239/oss/assemblyscript/src/compiler.ts:2196:21)
▌ at jr.compileTopLevelStatement (/Users/q540239/oss/assemblyscript/src/compiler.ts:2160:25)
▌ at jr.compileFile (/Users/q540239/oss/assemblyscript/src/compiler.ts:1099:12)
▌ at jr.compile (/Users/q540239/oss/assemblyscript/src/compiler.ts:548:14)
▌ at Module.G0 (/Users/q540239/oss/assemblyscript/src/index-wasm.ts:358:32)
▌
▌ If you see where the error is, feel free to send us a pull request. If not,
▌ please let us know: https://github.com/AssemblyScript/assemblyscript/issues
▌
▌ Thank you!

Steps to reproduce

namespace A {
  export function bar<T>(): void {}
}

A.bar;

AssemblyScript version

v0.27.9

[CountBleck]

See #2738.