Fixed signedness to avoid strange error messages.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@797 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/CNullDriver.cpp

@@ -1048,14 +1048,14 @@ u32 CNullDriver::getMaximalPrimitiveCount()
 
 
 //! checks triangle count and print warning if wrong
-bool CNullDriver::checkPrimitiveCount(s32 prmCount)
+bool CNullDriver::checkPrimitiveCount(u32 prmCount)
 {
-	s32 m = getMaximalPrimitiveCount();
+	u32 m = getMaximalPrimitiveCount();
 
-	if ((prmCount-1) > m)
+	if (prmCount > m)
 	{
 		char tmp[1024];
-		sprintf(tmp,"Could not draw triangles, too many primitives(%d), maxium is %d.", prmCount, m);
+		sprintf(tmp,"Could not draw triangles, too many primitives(%u), maxium is %u.", prmCount, m);
 		os::Printer::log(tmp, ELL_ERROR);
 		return false;
 	}

source/Irrlicht/CNullDriver.h

@@ -420,7 +420,7 @@ namespace video
 		virtual video::ITexture* createDeviceDependentTexture(IImage* surface, const char* name);
 
 		//! checks triangle count and print warning if wrong
-		bool checkPrimitiveCount(s32 prmcnt);
+		bool checkPrimitiveCount(u32 prmcnt);
 
 		// adds a material renderer and drops it afterwards. To be used for internal creation
 		s32 addAndDropMaterialRenderer(IMaterialRenderer* m);