Fix bug on reporting availability of deleted methods in libclang.

Patch by Sergey Kalinichev.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@248596 91177308-0d34-0410-b5e6-96231b3b80d8

Author: r4nt

test/Index/availability.cpp

@@ -0,0 +1,13 @@
+void foo() = delete;
+
+struct Foo {
+  int foo() = delete;
+  Foo() = delete;
+};
+
+
+// RUN: c-index-test -test-print-type --std=c++11 %s | FileCheck %s
+// CHECK: FunctionDecl=foo:1:6 (unavailable) [type=void ()] [typekind=FunctionProto] [resulttype=void] [resulttypekind=Void] [isPOD=0]
+// CHECK: StructDecl=Foo:3:8 (Definition) [type=Foo] [typekind=Record] [isPOD=1]
+// CHECK: CXXMethod=foo:4:7 (unavailable) [type=int ()] [typekind=FunctionProto] [resulttype=int] [resulttypekind=Int] [isPOD=0]
+// CHECK: CXXConstructor=Foo:5:3 (unavailable) [type=void ()] [typekind=FunctionProto] [resulttype=void] [resulttypekind=Void] [isPOD=0]

tools/libclang/CIndex.cpp

@@ -6412,7 +6412,7 @@ extern "C" {
 
 static CXAvailabilityKind getCursorAvailabilityForDecl(const Decl *D) {
   if (isa<FunctionDecl>(D) && cast<FunctionDecl>(D)->isDeleted())
-    return CXAvailability_Available;
+    return CXAvailability_NotAvailable;
 
   switch (D->getAvailability()) {
   case AR_Available: