aomdec: fix FILE leak on failure

Close `framestats_file` if the option was provided. This is a follow up
to: 58c8e14ddc aomdec: fix FILE leak on failure

Fixes some clang-19 static analysis warnings.

Bug: 474642915
Change-Id: I78203baed215de6ccb54d3dcb2b82e9d6473e360

apps/aomdec.c

diff --git a/apps/aomdec.c b/apps/aomdec.c
index 4d5999f..3a8fbc3 100644
--- a/apps/aomdec.c
+++ b/apps/aomdec.c
@@ -619,6 +619,7 @@
     fprintf(stderr,
             "Not dumping raw video to your terminal. Use '-o -' to "
             "override.\n");
+    if (framestats_file) fclose(framestats_file);
     free(argv);
     return EXIT_FAILURE;
   }
@@ -629,6 +630,7 @@
   infile = using_file ? fopen(fn, "rb") : set_binary_mode(stdin);
 
   if (!infile) {
+    if (framestats_file) fclose(framestats_file);
     fatal("Failed to open input file '%s'", using_file ? fn : "stdin");
   }
   input.aom_input_ctx->filename = fn;