Add comments to testcases that need spurious whitespace

test/ClangImporter/AllowErrors/invalid-pch-bridging-header.swift

@@ -46,7 +46,8 @@ struct InnerTy {
 //--- use.swift
 func use(s: SomeTy, s2: InnerTy) {}
 
-
+// Note: extra newlines below ensure that context printing doesn't show the
+// lines that we shouldn't see.
 
 
 // MISSING_HMAP-NOT: cannot find type 'SomeTy' in scope

test/Frontend/invalid-testable-import.swift

@@ -6,6 +6,8 @@
 
 x = 8
 
+// Note: extra newlines below ensure that context printing doesn't show the
+// lines that we shouldn't see.
 
 
 // CHECK-NOT: cannot find 'x' in scope

test/NameLookup/nonempty-brace-in-brace.swift

@@ -9,6 +9,8 @@ public struct Foo {
 
 private extension String {}
 
+// Note: extra newlines below ensure that context printing doesn't show the
+// lines that we shouldn't see.
 
 
 

test/Parse/structure_overflow.swift

@@ -7,6 +7,8 @@
 
 ;blah blah blah
 
+// Note: extra newlines below ensure that context printing doesn't show the
+// lines that we shouldn't see.
 
 
 

test/Serialization/implementation-only-testable.swift

@@ -52,6 +52,8 @@ internal func dependsOnHiddenType() -> HiddenType { fatalError() }
 /// needs to enable testing. We may want to improve upon this in the future.
 import TestedLib
 
+// Note: extra newlines below ensure that context printing doesn't show the
+// lines that we shouldn't see.
 
 
 // CHECK-NOT-LOADED-NOT: remark: loaded module 'HiddenDep'

test/Serialization/spi-only-dependency.swift

@@ -38,6 +38,8 @@
 
 import Lib
 
+// Note: extra newlines below ensure that context printing doesn't show the
+// lines that we shouldn't see.