fix assertion failure in Skia_Linux_Fixed_Debug build

The assertion failure, only for SK_DEBUG and SK_SCALAR_IS_FIXED, was:
include/core/SkFixed.h:74: failed assertion "n >= -32768 && n <= 32767"

[bungeman, 2011-05-19 17:28:12]

LGTM

On 2011/05/19 15:50:04, epoger wrote:

[epoger, 2011-05-19 17:36:55]

committed as r1381

[reed1, 2011-05-20 14:44:21]

http://codereview.appspot.com/4556043/diff/1/gm/shadertext.cpp
File gm/shadertext.cpp (right):

http://codereview.appspot.com/4556043/diff/1/gm/shadertext.cpp#newcode14
gm/shadertext.cpp:14: int         shorterDimensionAsInt = w < h ? w : h;
SkScalar s = SkIntToScalar(SkMin32(w, h));