msi: Print the string and not the pointer in a TRACE.

[Hans Leidekker]

On Mon, 2011-09-19 at 21:24 +0200, Michael Stefaniuc wrote:
> @@ -489,7 +489,7 @@ UINT WINAPI MsiGetSourcePathA( MSIHANDLE hInstall, LPCSTR szFolder,
>      awstring str;
>      UINT r;
>  
> -    TRACE("%s %p %p\n", debugstr_a(szFolder), debugstr_a(szPathBuf), pcchPathBuf);
> +    TRACE("%s %s %p\n", debugstr_a(szFolder), debugstr_a(szPathBuf), pcchPathBuf);

szPathBuf is an output buffer.