Fix range check

The getarray() function checks to see if there's enough room in
the buffer, but it's using a byte count for the available size
and a possibly non-byte count for the space required.  Dividing
down by the unit size corrects the problem.

Bug 8713753

Change-Id: Id42c0df65c3233dcc5f76d05e229f7d40d4c1f99

opengl/tools/glgen/stubs/gles11/common.cpp

@@ -272,6 +272,7 @@ getarray
     int _needed = 0;
 
     params = (CTYPE *)getPointer(_env, params_buf, &_array, &_remaining, &_bufferOffset);
+    _remaining /= sizeof(CTYPE);    // convert from bytes to item count
     _needed = getNeededCount(pname);
     // if we didn't find this pname, we just assume the user passed
     // an array of the right size -- this might happen with extensions