hhctrl.ocx: Fix the character count passed to GetFullPathNameW in OpenCHM and NavigateToChm.

dlls/hhctrl.ocx/chm.c

@@ -342,7 +342,7 @@ CHMInfo *OpenCHM(LPCWSTR szFile)
 
     CHMInfo *ret = heap_alloc_zero(sizeof(CHMInfo));
 
-    res = GetFullPathNameW(szFile, sizeof(file), file, NULL);
+    res = GetFullPathNameW(szFile, sizeof(file)/sizeof(file[0]), file, NULL);
     ret->szFile = strdupW(file);
 
     hres = CoCreateInstance(&CLSID_ITStorage, NULL, CLSCTX_INPROC_SERVER,

dlls/hhctrl.ocx/help.c

@@ -115,7 +115,7 @@ BOOL NavigateToChm(HHInfo *info, LPCWSTR file, LPCWSTR index)
     if (!info->web_browser)
         return FALSE;
 
-    if(!GetFullPathNameW(file, sizeof(full_path), full_path, NULL)) {
+    if(!GetFullPathNameW(file, sizeof(full_path)/sizeof(full_path[0]), full_path, NULL)) {
         WARN("GetFullPathName failed: %u\n", GetLastError());
         return FALSE;
     }