Use empty parens for empty function parameter list instead of '(void)'.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168041 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/ASTUnit.cpp b/lib/Frontend/ASTUnit.cpp
index 5576854..bc29c66 100644
--- a/lib/Frontend/ASTUnit.cpp
+++ b/lib/Frontend/ASTUnit.cpp
@@ -103,7 +103,7 @@
   return M;
 }
 
-static void cleanupOnDiskMapAtExit(void);
+static void cleanupOnDiskMapAtExit();
 
 typedef llvm::DenseMap<const ASTUnit *, OnDiskData *> OnDiskDataMap;
 static OnDiskDataMap &getOnDiskDataMap() {
@@ -116,7 +116,7 @@
   return M;
 }
 
-static void cleanupOnDiskMapAtExit(void) {
+static void cleanupOnDiskMapAtExit() {
   // Use the mutex because there can be an alive thread destroying an ASTUnit.
   llvm::MutexGuard Guard(getOnDiskMutex());
   OnDiskDataMap &M = getOnDiskDataMap();