ART: Clean up field initialization

Add explicit field initialization to default value where necessary.
Also clean up interpreter intrinsics header.

Test: m
Change-Id: I7a850ac30dcccfb523a5569fb8400b9ac892c8e5
diff --git a/compiler/optimizing/induction_var_analysis_test.cc b/compiler/optimizing/induction_var_analysis_test.cc
index 82ee93d..9516ccb 100644
--- a/compiler/optimizing/induction_var_analysis_test.cc
+++ b/compiler/optimizing/induction_var_analysis_test.cc
@@ -29,7 +29,21 @@
  */
 class InductionVarAnalysisTest : public CommonCompilerTest {
  public:
-  InductionVarAnalysisTest() : pool_(), allocator_(&pool_) {
+  InductionVarAnalysisTest()
+      : pool_(),
+        allocator_(&pool_),
+        iva_(nullptr),
+        entry_(nullptr),
+        return_(nullptr),
+        exit_(nullptr),
+        parameter_(nullptr),
+        constant0_(nullptr),
+        constant1_(nullptr),
+        constant2_(nullptr),
+        constant7_(nullptr),
+        constant100_(nullptr),
+        constantm1_(nullptr),
+        float_constant0_(nullptr) {
     graph_ = CreateGraph(&allocator_);
   }