Fix cpp style cast and variable name

Test: run vts -m VtsHalRenderscriptV1_0TargetTest
Change-Id: I0c902aea13da7d4af2357ec42d8f712fda7269d4
diff --git a/renderscript/1.0/default/Device.cpp b/renderscript/1.0/default/Device.cpp
index 4831a8b..a2b950d 100644
--- a/renderscript/1.0/default/Device.cpp
+++ b/renderscript/1.0/default/Device.cpp
@@ -44,14 +44,14 @@
     const char* filename = "libRS_internal.so";
     // Try to load libRS_internal.so from the "rs" namespace directly.
     typedef struct android_namespace_t* (*GetExportedNamespaceFnPtr)(const char*);
-    GetExportedNamespaceFnPtr getExportedNamespace =
-        (GetExportedNamespaceFnPtr)dlsym(RTLD_DEFAULT, "android_get_exported_namespace");
+    GetExportedNamespaceFnPtr getExportedNamespace = reinterpret_cast<GetExportedNamespaceFnPtr>(
+        dlsym(RTLD_DEFAULT, "android_get_exported_namespace"));
     void* handle = nullptr;
     if (getExportedNamespace != nullptr) {
-        android_namespace_t* rs_namespace = getExportedNamespace("rs");
-        if (rs_namespace != nullptr) {
+        android_namespace_t* rsNamespace = getExportedNamespace("rs");
+        if (rsNamespace != nullptr) {
             const android_dlextinfo dlextinfo = {
-                .flags = ANDROID_DLEXT_USE_NAMESPACE, .library_namespace = rs_namespace,
+                .flags = ANDROID_DLEXT_USE_NAMESPACE, .library_namespace = rsNamespace,
             };
             handle = android_dlopen_ext(filename, RTLD_LAZY | RTLD_LOCAL, &dlextinfo);
         }