Fix mangled name in no-asserts standard library test.

Author: DougGregor

test/SILOptimizer/array_contentof_opt.swift

@@ -32,7 +32,7 @@ public func testThreeInts(_ a: inout [Int]) {
 
 // CHECK-LABEL: sil @{{.*}}testTooManyInts
 // CHECK-NOT: apply
-// CHECK:        [[F:%[0-9]+]] = function_ref  @$SSa6append10contentsOfyqd___t7ElementQyd__Rszs8SequenceRd__lFSi_SaySiGTg5
+// CHECK:        [[F:%[0-9]+]] = function_ref  @$SSa6append10contentsOfyqd___t7ElementQyd__RszSTRd__lFSi_SaySiGTg5
 // CHECK-NOT: apply
 // CHECK:        apply [[F]]
 // CHECK-NOT: apply