Fix clang warning about trailing semicolons.

Warning shows up with -Wsemicolon-before-method-body enabled.
Fix clang warning about shadowing local variables.

Warning shows up with -Wshadow enabled.
Merge pull request #113 from tijoinc/fix-clang-warnings

Fix Clang Warnings
Fixed brace style in OnePasswordExtension.m
Merge pull request #126 from AgileBits/task/fixed-brace-style

Fixed brace style in OnePasswordExtension.m
Merge branch 'master' into add-low-level-api
Fixed brace style in OnePasswordExtension.m