quartz: Don't use strlenW in array size declaration.

Use ARRAYSIZE() on the constant string arrays instead.

dlls/quartz/filtermapper.c

diff --git a/dlls/quartz/filtermapper.c b/dlls/quartz/filtermapper.c
index 9d8c9d6..a085b0a 100644
--- a/dlls/quartz/filtermapper.c
+++ b/dlls/quartz/filtermapper.c
@@ -1384,7 +1384,7 @@
     LPWSTR wszClsid = NULL;
     HKEY hKey;
     LONG lRet;
-    WCHAR wszKeyName[strlenW(wszFilterSlash) + (CHARS_IN_GUID-1) + 1];
+    WCHAR wszKeyName[ARRAYSIZE(wszFilterSlash)-1 + (CHARS_IN_GUID-1) + 1];
 
     TRACE("(%p)->(%s, %s, %x)\n", iface, debugstr_guid(&clsid), debugstr_w(szName), dwMerit);
 
@@ -1453,7 +1453,7 @@
     HKEY hKey = NULL;
     HKEY hPinsKey = NULL;
     WCHAR * wszPinsKeyName;
-    WCHAR wszKeyName[strlenW(wszClsidSlash) + (CHARS_IN_GUID-1) + 1];
+    WCHAR wszKeyName[ARRAYSIZE(wszClsidSlash)-1 + (CHARS_IN_GUID-1) + 1];
 
     TRACE("(%p)->(%s, %s, %d, %d, %d, %d, %s, %s)\n", iface, debugstr_guid(&Filter), debugstr_w(szName), bRendered,
                 bOutput, bZero, bMany, debugstr_guid(&ConnectsToFilter), debugstr_w(ConnectsToPin));
@@ -1614,7 +1614,7 @@
     LONG lRet;
     LPWSTR wszClsid = NULL;
     HKEY hKey;
-    WCHAR wszKeyName[strlenW(wszClsidSlash) + (CHARS_IN_GUID-1) + 1];
+    WCHAR wszKeyName[ARRAYSIZE(wszClsidSlash)-1 + (CHARS_IN_GUID-1) + 1];
 
     TRACE("(%p)->(%s)\n", iface, debugstr_guid(&Filter));
 
@@ -1676,7 +1676,7 @@
     LPWSTR wszClsid = NULL;
     HKEY hKey = NULL;
     WCHAR * wszPinNameKey;
-    WCHAR wszKeyName[strlenW(wszClsidSlash) + (CHARS_IN_GUID-1) + 1];
+    WCHAR wszKeyName[ARRAYSIZE(wszClsidSlash)-1 + (CHARS_IN_GUID-1) + 1];
 
     TRACE("(%p)->(%s, %s)\n", iface, debugstr_guid(&Filter), debugstr_w(Name));