Glom 1.24.2 Repairs Clang Compiler Warning Issues

Thanks to Murray Cumming, Glom 1.24.2 introduces fixes for the Clang compiler and scan-build analyzer warnings, which should make sharing over the network work again. Also thanks to Murray Cumming, this second maintenance release of Glom 1.24 now avoids some crashes that appear whenever the user was switching between Find and Data modes, or when navigating around the app generally. Glom 1.24.2 also corrects a Relationship title in Small Business examples.