Some fixes for GLX_INDIRECT_RENDERING only build

This fixes some of the build issues with GLX_INDIRECT_RENDERING but !GLX_DIRECT_RENDERING due to recent changes.

Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Signed-off-by: Kristian Høgsberg <krh@bitplanet.net>
diff --git a/src/glx/glx_pbuffer.c b/src/glx/glx_pbuffer.c
index 15bfb15..d065f4b 100644
--- a/src/glx/glx_pbuffer.c
+++ b/src/glx/glx_pbuffer.c
@@ -86,7 +86,9 @@
                         const CARD32 * attribs, size_t num_attribs)
 {
    struct glx_display *priv = __glXInitialize(dpy);
+#ifdef GLX_DIRECT_RENDERING
    __GLXDRIdrawable *pdraw;
+#endif
    CARD32 *output;
    CARD8 opcode;
    int i;
@@ -95,8 +97,6 @@
       return;
    }
 
-   pdraw = GetGLXDRIDrawable(dpy, drawable);
-
    opcode = __glXSetupForCommand(dpy);
    if (!opcode)
       return;
@@ -133,6 +133,9 @@
    UnlockDisplay(dpy);
    SyncHandle();
 
+#ifdef GLX_DIRECT_RENDERING
+   pdraw = GetGLXDRIDrawable(dpy, drawable);
+
    for (i = 0; i < num_attribs; i++) {
       switch(attribs[i * 2]) {
       case GLX_EVENT_MASK:
@@ -141,6 +144,7 @@
 	 break;
       }
    }
+#endif
 
    return;
 }