[AST] Fix a few incorrectly indented lines. NFC.

Author: huonw

lib/AST/GenericSignatureBuilder.cpp

@@ -4081,7 +4081,7 @@ auto GenericSignatureBuilder::resolve(UnresolvedType paOrT,
     return ResolvedType(pa);
 
   // Determine what kind of resolution we want.
-    Type type = paOrT.dyn_cast<Type>();
+  Type type = paOrT.dyn_cast<Type>();
   ArchetypeResolutionKind resolutionKind =
     ArchetypeResolutionKind::WellFormed;
   if (!source.isExplicit() && source.isRecursive(type, *this))
@@ -5087,7 +5087,7 @@ ConstraintResult GenericSignatureBuilder::addSameTypeRequirementToConcrete(
                                            ResolvedType type,
                                            Type concrete,
                                            const RequirementSource *source) {
-auto equivClass = type.getEquivalenceClass(*this);
+  auto equivClass = type.getEquivalenceClass(*this);
 
   // Record the concrete type and its source.
   equivClass->concreteTypeConstraints.push_back(
@@ -6472,7 +6472,7 @@ static void computeDerivedSameTypeComponents(
 
   // If there is a concrete type, figure out the best concrete type anchor
   // per component.
-auto genericParams = builder.getGenericParams();
+  auto genericParams = builder.getGenericParams();
   for (const auto &concrete : equivClass->concreteTypeConstraints) {
     // Dig out the component associated with constraint.
     Type subjectType = concrete.getSubjectDependentType(genericParams);