rpcrt4: RPCRT4_strdupWtoA and RPCRT4_strdupAtoW don't change the input string, so make the input const.

[Robert Shearman]

---
  dlls/rpcrt4/rpc_binding.c |    4 ++--
  dlls/rpcrt4/rpc_binding.h |    4 ++--
  2 files changed, 4 insertions(+), 4 deletions(-)
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diff --git a/dlls/rpcrt4/rpc_binding.c b/dlls/rpcrt4/rpc_binding.c
index ffa9659..1d10f3d 100644
--- a/dlls/rpcrt4/rpc_binding.c
+++ b/dlls/rpcrt4/rpc_binding.c
@@ -57,7 +57,7 @@ LPSTR RPCRT4_strndupA(LPCSTR src, INT sl
   return s;
 }
 
-LPSTR RPCRT4_strdupWtoA(LPWSTR src)
+LPSTR RPCRT4_strdupWtoA(LPCWSTR src)
 {
   DWORD len;
   LPSTR s;
@@ -68,7 +68,7 @@ LPSTR RPCRT4_strdupWtoA(LPWSTR src)
   return s;
 }
 
-LPWSTR RPCRT4_strdupAtoW(LPSTR src)
+LPWSTR RPCRT4_strdupAtoW(LPCSTR src)
 {
   DWORD len;
   LPWSTR s;
diff --git a/dlls/rpcrt4/rpc_binding.h b/dlls/rpcrt4/rpc_binding.h
index 76100d6..f1ebdbd 100644
--- a/dlls/rpcrt4/rpc_binding.h
+++ b/dlls/rpcrt4/rpc_binding.h
@@ -105,8 +105,8 @@ typedef struct _RpcBinding
 
 LPSTR RPCRT4_strndupA(LPCSTR src, INT len);
 LPWSTR RPCRT4_strndupW(LPCWSTR src, INT len);
-LPSTR RPCRT4_strdupWtoA(LPWSTR src);
-LPWSTR RPCRT4_strdupAtoW(LPSTR src);
+LPSTR RPCRT4_strdupWtoA(LPCWSTR src);
+LPWSTR RPCRT4_strdupAtoW(LPCSTR src);
 void RPCRT4_strfree(LPSTR src);
 
 #define RPCRT4_strdupA(x) RPCRT4_strndupA((x),-1)