Bruno Jesus : msvfw32: Trace only what matters in MCIWNDM_GETDEVICE.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 19d73d284745b3f24844ed5967f18ee2a9993f2f
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=19d73d284745b3f24844ed5967f18ee2a9993f2f

Author: Bruno Jesus <00cpxxx at gmail.com>
Date:   Thu Sep 10 00:48:05 2015 +0800

msvfw32: Trace only what matters in MCIWNDM_GETDEVICE.

---

 dlls/msvfw32/mciwnd.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/dlls/msvfw32/mciwnd.c b/dlls/msvfw32/mciwnd.c
index e561b14..fc49973 100644
--- a/dlls/msvfw32/mciwnd.c
+++ b/dlls/msvfw32/mciwnd.c
@@ -1070,27 +1070,33 @@ end_of_mci_open:
 
     case MCIWNDM_GETDEVICEA:
         {
+            int len = 0;
+            char *str = (char *)lParam;
             MCI_SYSINFO_PARMSA mci_sysinfo;
 
-            mci_sysinfo.lpstrReturn = (LPSTR)lParam;
+            mci_sysinfo.lpstrReturn = str;
             mci_sysinfo.dwRetSize = wParam;
             mwi->lasterror = mciSendCommandA(mwi->mci, MCI_SYSINFO,
                                              MCI_SYSINFO_INSTALLNAME,
                                              (DWORD_PTR)&mci_sysinfo);
-            TRACE("MCIWNDM_GETDEVICEA: %s\n", debugstr_an((LPSTR)lParam, wParam));
+            while(len < wParam && str[len]) len++;
+            TRACE("MCIWNDM_GETDEVICEA: %s\n", debugstr_an(str, len));
             return 0;
         }
 
     case MCIWNDM_GETDEVICEW:
         {
+            int len = 0;
+            WCHAR *str = (WCHAR *)lParam;
             MCI_SYSINFO_PARMSW mci_sysinfo;
 
-            mci_sysinfo.lpstrReturn = (LPWSTR)lParam;
+            mci_sysinfo.lpstrReturn = str;
             mci_sysinfo.dwRetSize = wParam;
             mwi->lasterror = mciSendCommandW(mwi->mci, MCI_SYSINFO,
                                              MCI_SYSINFO_INSTALLNAME,
                                              (DWORD_PTR)&mci_sysinfo);
-            TRACE("MCIWNDM_GETDEVICEW: %s\n", debugstr_wn((LPWSTR)lParam, wParam));
+            while(len < wParam && str[len]) len++;
+            TRACE("MCIWNDM_GETDEVICEW: %s\n", debugstr_wn(str, len));
             return 0;
         }