MERGE: Closes #15897: zipimport.c doesn't check return value of fseek()

diff --cc Misc/NEWS
index 4c880b6d197e5dd8fa6b996df99af475637b4d88,aada4df299cc608376f41c6d7baab7f2ad96969b..3b8ec219ef2d2b423eb6b688317bd3fcadf0c087
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -27,6 -27,6 +27,9 @@@ Core and Builtin
  - Issue #15846: Fix SystemError which happened when using `ast.parse()` in an
    exception handler on code with syntax errors.
  
++- Issue #15897: zipimport.c doesn't check return value of fseek().
++  Patch by Felipe Cruz.
++
  - Issue #15801: Make sure mappings passed to '%' formatting are actually
    subscriptable.