No problem!

The system will still take SOME refrigerant without the compressor spinning. Until it reaches the minimum required system pressure. Then the compressor will engage and draw in the rest of the needed refrigerant.

Keep in mind though... If your system is leaking, a can of 134a is just a band-aid. How long it will last depends on how fast and where your system is leaking. You will have to replace hard parts eventually.