Adjust normalization tests to compare file offsets

Some of our normalization tests incorrectly compare the output of
normalization (file offsets) with a virtual address. Adjust them to
compare apples to apples (i.e., file offsets to file offsets) instead.

Refs: libbpf#835
Reported-by: Nicolas Savoire <nicolas.savoire@datadoghq.com>

Signed-off-by: Daniel Müller <deso@posteo.net>

src/normalize/normalizer.rs

@@ -479,7 +479,7 @@ mod tests {
         assert_eq!(normalized.meta.len(), 1);
 
         let output = normalized.outputs[0];
-        assert_eq!(output.0, sym.addr);
+        assert_eq!(output.0, sym.file_offset.unwrap());
         let meta = &normalized.meta[output.1];
         let expected_elf = Elf {
             build_id: Some(read_elf_build_id(&test_so).unwrap().unwrap()),
@@ -527,7 +527,7 @@ mod tests {
             assert_eq!(normalized.meta.len(), 1);
 
             let output = normalized.outputs[0];
-            assert_eq!(output.0, sym.addr);
+            assert_eq!(output.0, sym.file_offset.unwrap());
             let meta = &normalized.meta[output.1].as_elf().unwrap();
             let expected_build_id = if use_map_files || use_procmap_query {
                 Some(read_elf_build_id(&test_so).unwrap().unwrap())