Extra spaces surrounding arrow in templated member call in variable decl

[lichray]

Bugzilla Link	43851
Version	8.0
OS	Windows NT
Attachments	repro

Extended Description

The last declaration in the following code:

  struct A {
    template <int> A foo();
  };

  auto p = new A;
  auto x = p -> foo<1>();

Should be

auto x = p->foo<1>();

[mydeveloperday]

Its incorrectly thinking -> is a trailing return arrow

AnnotatedTokens(L=0):
 M=0 C=0 T=Unknown S=1 F=0 B=0 BK=0 P=0 Name=auto L=4 PPK=2 FakeLParens=2/ FakeRParens=0 II=0x2bcc9700fb8 Text='auto'
 M=0 C=1 T=StartOfName S=1 F=0 B=0 BK=0 P=220 Name=identifier L=6 PPK=2 FakeLParens= FakeRParens=0 II=0x2bcc96b9a98 Text='x'
 M=0 C=0 T=BinaryOperator S=1 F=0 B=0 BK=0 P=22 Name=equal L=8 PPK=2 FakeLParens= FakeRParens=0 II=0x0 Text='='
 M=0 C=1 T=Unknown S=1 F=0 B=0 BK=0 P=22 Name=identifier L=10 PPK=2 FakeLParens=0/ FakeRParens=0 II=0x2bcc96b9a68 Text='p'
 M=0 C=1 T=TrailingReturnArrow S=1 F=0 B=0 BK=0 P=23 Name=arrow L=13 PPK=2 FakeLParens= FakeRParens=0 II=0x0 Text='->'
 M=0 C=0 T=Unknown S=1 F=0 B=0 BK=0 P=23 Name=identifier L=17 PPK=2 FakeLParens= FakeRParens=0 II=0x2bcc96b9a38 Text='foo'
 M=0 C=0 T=TemplateOpener S=0 F=0 B=0 BK=0 P=30 Name=less L=18 PPK=2 FakeLParens= FakeRParens=0 II=0x0 Text='<'
 M=0 C=1 T=Unknown S=0 F=0 B=0 BK=0 P=360 Name=numeric_constant L=19 PPK=2 FakeLParens= FakeRParens=0 II=0x0 Text='1'
 M=0 C=0 T=TemplateCloser S=0 F=0 B=0 BK=0 P=270 Name=greater L=20 PPK=2 FakeLParens= FakeRParens=0 II=0x0 Text='>'
 M=0 C=0 T=Unknown S=0 F=0 B=0 BK=0 P=30 Name=l_paren L=21 PPK=2 FakeLParens= FakeRParens=0 II=0x0 Text='('
 M=0 C=0 T=Unknown S=0 F=0 B=0 BK=0 P=59 Name=r_paren L=22 PPK=2 FakeLParens= FakeRParens=2 II=0x0 Text=')'
 M=0 C=0 T=Unknown S=0 F=0 B=0 BK=0 P=23 Name=semi L=23 PPK=2 FakeLParens= FakeRParens=0 II=0x0 Text=';'

[mydeveloperday]

https://reviews.llvm.org/D115903