Check for unknown flags passed to dlopen(3).

Change-Id: I56f4aab0e5a1487bc32d2c4d231e8bd15c4ac8da
diff --git a/tests/Android.mk b/tests/Android.mk
index abc6f52..7153383 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -68,7 +68,7 @@
 
 test_dynamic_ldflags = -Wl,--export-dynamic -Wl,-u,DlSymTestFunction
 test_dynamic_src_files = \
-    dlopen_test.cpp \
+    dlfcn_test.cpp \
 
 # Build tests for the device (with bionic's .so). Run with:
 #   adb shell /data/nativetest/bionic-unit-tests/bionic-unit-tests