[SourceKit/CodeFormat] Update hasOutdent check to handle specialization ranges < >

They were missed before, so < > that should trigger outdenting weren't. E.g.
let x = foo<
  Int, String, Int
>()
    .count // Indented becase we didn't process the < > brackets previously.

Author: Nathan Hawes

lib/IDE/Formatting.cpp

@@ -614,6 +614,10 @@ class RangeWalker: protected ASTWalker {
                           PL->getStartLoc()))
           return Stop;
       }
+    } else if (auto *USE = dyn_cast<UnresolvedSpecializeExpr>(E)) {
+      SourceLoc ContextLoc = getContextLocForArgs(SM, E);
+      if (!handleAngles(USE->getLAngleLoc(), USE->getRAngleLoc(), ContextLoc))
+        return Stop;
     } else if (isa<CallExpr>(E) || isa<SubscriptExpr>(E)) {
       SourceLoc ContextLoc = getContextLocForArgs(SM, E);
       Expr *Arg;

test/swift-indent/basic.swift

@@ -905,6 +905,14 @@ let x = foo<Int,
             String,
             Int>()
 
+let x = foo<
+    Int,
+    String,
+    Int
+>()
+.filter { $0 > 10 }
+.count
+
 
 // Invalid elements should still be indented.
 //