Fix RegTypeCache typo/memory-leak.

Change-Id: I71df46d0baed37ba89129fa14697eb504194e770
diff --git a/src/verifier/reg_type_cache.cc b/src/verifier/reg_type_cache.cc
index 6228ba5..a8caa94 100644
--- a/src/verifier/reg_type_cache.cc
+++ b/src/verifier/reg_type_cache.cc
@@ -268,7 +268,7 @@
     IntegerType::Destroy();
     LongLoType::Destroy();
     LongHiType::Destroy();
-    FloatType::GetInstance();
+    FloatType::Destroy();
     DoubleLoType::Destroy();
     DoubleHiType::Destroy();
     RegTypeCache::primitive_initialized_ = false;