fix typo in VIC_VALGRIND_SUPPRESSIONS (UW-Hydro#60)

* update vic_valgrind_suppressions.supp filename

* fix another typo in VIC_VALGRIND_SUPPRESSIONS

Author: Joe Hamman

tonic/models/vic/vic.py

@@ -122,8 +122,8 @@ def _call_vic(self, *args, **kwargs):
             self.args.extend([valgrind, '-v', '--leak-check=full',
                              '--error-exitcode={0}'.format(errorcode)])
 
-            suppressions = os.getenv('VIC_VALGRIND_SUPRESSIONS',
-                                    default_vic_valgrind_suppressions_path)
+            suppressions = os.getenv('VIC_VALGRIND_SUPPRESSIONS',
+                                     default_vic_valgrind_suppressions_path)
             if os.path.isfile(suppressions):
                 self.args.extend(['--suppressions={0}'.format(suppressions)])