tests: avoid compiler warnings

[pspp] / ChangeLog

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+2009-12-23  Eric Blake  <ebb9@byu.net>
+
+       tests: avoid compiler warnings
+       * tests/test-fcntl.c (main): Delete unused parameters.
+       * tests/test-freopen-safer.c (main): Likewise.
+       * tests/test-xalloc-die.c (main): Mark unused parameters.
+       * tests/test-fseeko.c (main): Likewise.
+       * tests/test-ftello.c (main): Likewise.
+       * tests/test-nanosleep.c (main): Avoid declaration warning.
+       * tests/test-sleep.c (main): Likewise.
+       * tests/test-unsetenv.c (main): Silence warning about string
+       literal.
+       * m4/setenv.m4 (gl_FUNC_UNSETENV): Likewise.
+
 2009-12-23  Bruno Haible  <bruno@clisp.org>
 
        * tests/test-localename.c (test_locale_name): New function, extracted