cafe-desktop/libcafeweather Static analyzer results

weather-metar: Fix behavior since libsoup 3.5.0

This change is needed since the libsoup commit:
https://gitlab.gnome.org/GNOME/libsoup/-/commit/7f34687a13a8d112624829387820cc4665eebf4c

• 2024-08-25-170249-2806-cppcheck@1e879c9a7150_master
• 2024-08-25-170056-14500-1@1e879c9a7150_master
• 2024-08-25-165444-0365-cppcheck@1e879c9a7150_devel logs 142
• 2024-08-25-165338-4275-cppcheck@73c3be0205a2_devel logs 142
• 2024-08-25-165251-14497-1@1e879c9a7150_devel logs 142
• 2024-08-25-165145-14498-1@73c3be0205a2_devel logs 142
• 2024-08-05-203016-4924-cppcheck@22f245359548_master logs 142
• 2024-08-05-202824-15211-1@22f245359548_master logs 142
• 2024-02-11-192513-7755-cppcheck@2a6d96d873a2_master logs 54
• 2024-02-11-192315-15480-1@2a6d96d873a2_master logs 54
• 2024-02-11-185944-4632-cppcheck@9fb116f826c6_master logs 54
• 2024-02-11-185743-15480-1@9fb116f826c6_master logs 54
• 2024-02-11-172850-8216-cppcheck@1390a42c673e_port_libsoup3 logs 55
• 2024-02-11-172650-15479-1@1390a42c673e_port_libsoup3 logs 55
• 2024-02-11-171427-2983-cppcheck@9fb116f826c6_port_libsoup3 logs 54
• 2024-02-11-171227-15480-1@9fb116f826c6_port_libsoup3 logs 54
• 2024-02-11-115716-6437-cppcheck@985ffc4e8d11_port_libsoup3 logs 54
• 2024-02-11-115518-15480-1@985ffc4e8d11_port_libsoup3 logs 54
• 2024-02-11-015328-9116-cppcheck@0e6d69c04311_libsoup3 logs 69
• 2024-02-11-015129-15479-1@0e6d69c04311_libsoup3 logs 69