fixed typo in use of float exclusion macro

git-svn-id: http://unity.svn.sourceforge.net/svnroot/unity/trunk@49 e7d17a6e-8845-0410-bbbc-c8efb4fdad7e

src/unity.c

@@ -340,7 +340,7 @@ void UnityAssertEqualUnsignedIntArray(const unsigned int* expected,
     }
 }
 
-#ifndef UNITY_EXCLUDE_UFOAT
+#ifndef UNITY_EXCLUDE_FLOAT
 void UnityAssertFloatsWithin(const _UF delta,
                              const _UF expected,
                              const _UF actual,