resize final output of CSR * CSR to account for excluded zeros
resize final output of CSR * CSR to account for excluded zeros

Reported by Justin Luitjens and Simon Layton

vkirangoud/cusp-library,gshashidhar125/cusp-library,victordion/cusp-library,tectronics/cusp-library,victordion/cusp-library,victordion/cusp-library,tectronics/cusp-library,gshashidhar125/cusp-library,tectronics/cusp-library,baiyunping333/cusp-library,vkirangoud/cusp-library,victordion/cusp-library,gshashidhar125/cusp-library,tectronics/cusp-library,baiyunping333/cusp-library,vkirangoud/cusp-library,gshashidhar125/cusp-library,baiyunping333/cusp-library,vkirangoud/cusp-library,baiyunping333/cusp-library