Avoid checking to see if a bool is less than zero.
Create a symbolic name for -1 when it means "don't know, probe at runtime".



git-svn-id: http://skia.googlecode.com/svn/trunk@1606 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/src/GrGpuGL.cpp b/gpu/src/GrGpuGL.cpp
index 177ddb1..973e1e4 100644
--- a/gpu/src/GrGpuGL.cpp
+++ b/gpu/src/GrGpuGL.cpp
@@ -471,10 +471,11 @@
     // TODO: Make these a preprocess that generate some compile time constants.
     // TODO: probe once at startup, rather than once per context creation.
 
-    fNPOTRenderTargetSupport = GrGLGetGLInterface()->fNPOTRenderTargetSupport;
-    if (fNPOTRenderTargetSupport < 0) {
+    if (GrGLGetGLInterface()->fNPOTRenderTargetSupport < 0) {
         fNPOTRenderTargetSupport =
             probe_for_npot_render_target_support(fNPOTTextureSupport);
+    } else {
+        fNPOTRenderTargetSupport = GrGLGetGLInterface()->fNPOTRenderTargetSupport;
     }
 
     if (gPrintStartupSpew) {