NPE in Flow$FlowAnalyzer.visitApply: Cannot invoke getThrownTypes because tree.meth.type is null

There have been a handful of other bugs involving NPEs in Flow$FlowAnalyzer.visitApply, but this appears to be a distinct issue that still reproduces with the latest JDK 16 EA:

```
import static java.util.Map.Entry.comparingByKey;

import java.util.List;
import java.util.Map;
import java.util.stream.Stream;

public class T {

  void f(Stream<Map.Entry<Long, List<String>>> stream) {
    stream
        .sorted(
            comparingByKey()
                .thenComparing((Map.Entry<Long, List<String>> e) -> e.getValue().hashCode()))
        .count();
  }
}
```

```
javac -fullversion T.java
javac full version "16-ea+34-2216"
An exception has occurred in the compiler (16-ea). Please file a bug against the Java compiler via the Java bug reporting page (http://bugreport.java.com) after checking the Bug Database (http://bugs.java.com) for duplicates. Include your program, the following diagnostic, and the parameters passed to the Java compiler in your report. Thank you.
java.lang.NullPointerException: Cannot invoke "com.sun.tools.javac.code.Type.getThrownTypes()" because "tree.meth.type" is null
        at jdk.compiler/com.sun.tools.javac.comp.Flow$FlowAnalyzer.visitApply(Flow.java:1383)
        at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1745)
        at jdk.compiler/com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
        at jdk.compiler/com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:440)
        at jdk.compiler/com.sun.tools.javac.tree.TreeScanner.visitSelect(TreeScanner.java:316)
        at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:2273)
        at jdk.compiler/com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
        at jdk.compiler/com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:440)
        at jdk.compiler/com.sun.tools.javac.comp.Flow$FlowAnalyzer.visitApply(Flow.java:1381)
        at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1745)
        at jdk.compiler/com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
        at jdk.compiler/com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:440)
        at jdk.compiler/com.sun.tools.javac.tree.TreeScanner.visitExec(TreeScanner.java:219)
```