Due to the time64 transition -Werror=implicit-function-declaration was
turned on by default in unstable. This change makes mate-equake-applet
fail to build from source. Relevant snippet:
| equake_processdata.c: In function ‘convert_localtime’:
| equake_processdata.c:1105:3: error: implicit declaration of function ‘strptime’; did you mean ‘strftime’? [-Werror=implicit-function-declaration]
| 1105 | strptime(datetime, "%Y %m %d %H %M %S %z", tp); /* year month day hour minute second */
| | ^~~~~~~~
| | strftime