Exit normally when relocations are already packed.

Bug: http://b/18051137
Change-Id: Idfffac5fe965e3cdeabe6d3b2dcd8c275c6ae5df
diff --git a/tools/relocation_packer/src/elf_file_unittest.cc b/tools/relocation_packer/src/elf_file_unittest.cc
index 5271eef..32f7968 100644
--- a/tools/relocation_packer/src/elf_file_unittest.cc
+++ b/tools/relocation_packer/src/elf_file_unittest.cc
@@ -103,8 +103,8 @@
 static void ProcessUnpack(FILE* relocs_so, FILE* packed_relocs_so) {
   relocation_packer::ElfFile<ELF> elf_file(fileno(packed_relocs_so));
 
-  // Ensure packing fails (already packed).
-  EXPECT_FALSE(elf_file.PackRelocations());
+  // Ensure packing already packed elf-file does not fail the build.
+  EXPECT_TRUE(elf_file.PackRelocations());
 
   // Unpack golden relocations, and check files are now identical.
   EXPECT_TRUE(elf_file.UnpackRelocations());