Normally it shouldn't matter too much, but the GIR parser apparently
doesn't like it:

```
/home/niels/gnome/libsecret/libsecret/secret-schema.h:75: syntax error, unexpected ';' in ';' at ';'
/home/niels/gnome/libsecret/libsecret/secret-prompt.h:78: syntax error, unexpected ';' in ';' at ';'
/home/niels/gnome/libsecret/libsecret/secret-value.h:54: syntax error, unexpected ';' in ';' at ';'
/home/niels/gnome/libsecret/libsecret/secret-service.h:307: syntax error, unexpected ';' in ';' at ';'
/home/niels/gnome/libsecret/libsecret/secret-collection.h:176: syntax error, unexpected ';' in ';' at ';'
/home/niels/gnome/libsecret/libsecret/secret-item.h:194: syntax error, unexpected ';' in ';' at ';'
```