Fix warnings in libc++abi tests

llvm-svn: 290471
diff --git a/libcxxabi/test/test_fallback_malloc.pass.cpp b/libcxxabi/test/test_fallback_malloc.pass.cpp
index 250a738..734a276 100644
--- a/libcxxabi/test/test_fallback_malloc.pass.cpp
+++ b/libcxxabi/test/test_fallback_malloc.pass.cpp
@@ -165,7 +165,7 @@
     }
 
     
-int main ( int argc, char *argv [] ) {
+int main () {
     print_free_list ();
 
     char *p = (char *) fallback_malloc ( 1024 );    // too big!