Don't explicitly specify no prefix/suffix.

Bug: http://b/129068177
Test: treehugger
Change-Id: Ica29efa3c3e49f556157cb0f82fdadef91aadba8
diff --git a/tools/aapt2/cmd/Convert_test.cpp b/tools/aapt2/cmd/Convert_test.cpp
index 3c0fe37..ddc146c 100644
--- a/tools/aapt2/cmd/Convert_test.cpp
+++ b/tools/aapt2/cmd/Convert_test.cpp
@@ -123,8 +123,7 @@
 
   void* cookie = nullptr;
 
-  ZipString prefix("res/theme/10");
-  int32_t result = StartIteration(handle, &cookie, &prefix, nullptr);
+  int32_t result = StartIteration(handle, &cookie, "res/theme/10", "");
 
   // If this is -5, that means we've found a duplicate entry and this test has failed
   EXPECT_THAT(result, Eq(0));
@@ -145,4 +144,4 @@
   EXPECT_THAT(count, Eq(1));
 }
 
-}  // namespace aapt
\ No newline at end of file
+}  // namespace aapt