Fix test in UnsafeRowConverterSuite

Author: JoshRosen

sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/UnsafeRowConverterSuite.scala

@@ -146,8 +146,8 @@ class UnsafeRowConverterSuite extends SparkFunSuite with Matchers {
     assert(createdFromNull.getShort(3) === 0)
     assert(createdFromNull.getInt(4) === 0)
     assert(createdFromNull.getLong(5) === 0)
-    assert(java.lang.Float.isNaN(createdFromNull.getFloat(6)))
-    assert(java.lang.Double.isNaN(createdFromNull.getDouble(7)))
+    assert(createdFromNull.getFloat(6) === 0.0f)
+    assert(createdFromNull.getDouble(7) === 0.0d)
     assert(createdFromNull.getUTF8String(8) === null)
     assert(createdFromNull.getBinary(9) === null)
     // assert(createdFromNull.get(10) === null)