empty string in split_string_list fix
empty string in split_string_list fix

When an empty string or a string with only spaces is given to this function, the split_string_list function will ask in line 222 for name[-1], which will result in unpredictable behaviour. I propose to prevent this by adding a condition that the length of the string may not be 0.
kalj/dealii,nicolacavallini/dealii,adamkosik/dealii,JaeryunYim/dealii,nicolacavallini/dealii,nicolacavallini/dealii,spco/dealii,pesser/dealii,EGP-CIG-REU/dealii,spco/dealii,JaeryunYim/dealii,ibkim11/dealii,YongYang86/dealii,spco/dealii,lue/dealii,kalj/dealii,msteigemann/dealii,naliboff/dealii,johntfoster/dealii,rrgrove6/dealii,spco/dealii,JaeryunYim/dealii,ESeNonFossiIo/dealii,natashasharma/dealii,spco/dealii,EGP-CIG-REU/dealii,jperryhouts/dealii,nicolacavallini/dealii,ESeNonFossiIo/dealii,angelrca/dealii,sriharisundar/dealii,mac-a/dealii,andreamola/dealii,pesser/dealii,adamkosik/dealii,sriharisundar/dealii,mtezzele/dealii,angelrca/dealii,adamkosik/dealii,YongYang86/dealii,naliboff/dealii,mtezzele/dealii,EGP-CIG-REU/dealii,pesser/dealii,gpitton/dealii,maieneuro/dealii,rrgrove6/dealii,adamkosik/dealii,ibkim11/dealii,ibkim11/dealii,johntfoster/dealii,lue/dealii,EGP-CIG-REU/dealii,jperryhouts/dealii,pesser/dealii,gpitton/dealii,msteigemann/dealii,jperryhouts/dealii,mac-a/dealii,YongYang86/dealii,lue/dealii,danshapero/dealii,mtezzele/dealii,lpolster/dealii,maieneuro/dealii,andreamola/dealii,mac-a/dealii,JaeryunYim/dealii,angelrca/dealii,lpolster/dealii,sairajat/dealii,kalj/dealii,shakirbsm/dealii,Arezou-gh/dealii,ibkim11/dealii,Arezou-gh/dealii,naliboff/dealii,angelrca/dealii,mtezzele/dealii,gpitton/dealii,natashasharma/dealii,jperryhouts/dealii,danshapero/dealii,johntfoster/dealii,angelrca/dealii,sairajat/dealii,sairajat/dealii,johntfoster/dealii,angelrca/dealii,natashasharma/dealii,natashasharma/dealii,sairajat/dealii,sriharisundar/dealii,pesser/dealii,andreamola/dealii,sairajat/dealii,shakirbsm/dealii,naliboff/dealii,ESeNonFossiIo/dealii,sriharisundar/dealii,danshapero/dealii,mtezzele/dealii,mac-a/dealii,nicolacavallini/dealii,naliboff/dealii,YongYang86/dealii,natashasharma/dealii,kalj/dealii,ESeNonFossiIo/dealii,jperryhouts/dealii,maieneuro/dealii,lpolster/dealii,mac-a/dealii,msteigemann/dealii,andreamola/dealii,lpolster/dealii,mtezzele/dealii,nicolacavallini/dealii,ibkim11/dealii,andreamola/dealii,naliboff/dealii,YongYang86/dealii,rrgrove6/dealii,johntfoster/dealii,kalj/dealii,EGP-CIG-REU/dealii,rrgrove6/dealii,ibkim11/dealii,JaeryunYim/dealii,sriharisundar/dealii,jperryhouts/dealii,andreamola/dealii,shakirbsm/dealii,rrgrove6/dealii,lue/dealii,JaeryunYim/dealii,pesser/dealii,gpitton/dealii,johntfoster/dealii,gpitton/dealii,mtezzele/dealii,pesser/dealii,danshapero/dealii,maieneuro/dealii,kalj/dealii,lue/dealii,JaeryunYim/dealii,mac-a/dealii,msteigemann/dealii,maieneuro/dealii,lpolster/dealii,Arezou-gh/dealii,jperryhouts/dealii,ESeNonFossiIo/dealii,msteigemann/dealii,ibkim11/dealii,mac-a/dealii,ESeNonFossiIo/dealii,spco/dealii,sriharisundar/dealii,rrgrove6/dealii,ESeNonFossiIo/dealii,lpolster/dealii,sairajat/dealii,adamkosik/dealii,spco/dealii,gpitton/dealii,sriharisundar/dealii,nicolacavallini/dealii,johntfoster/dealii,danshapero/dealii,msteigemann/dealii,natashasharma/dealii,lpolster/dealii,msteigemann/dealii,shakirbsm/dealii,Arezou-gh/dealii,Arezou-gh/dealii,natashasharma/dealii,gpitton/dealii,danshapero/dealii,shakirbsm/dealii,shakirbsm/dealii,sairajat/dealii,adamkosik/dealii,rrgrove6/dealii,EGP-CIG-REU/dealii,naliboff/dealii,maieneuro/dealii,adamkosik/dealii,lue/dealii,Arezou-gh/dealii,kalj/dealii,lue/dealii,maieneuro/dealii,andreamola/dealii,danshapero/dealii,angelrca/dealii,shakirbsm/dealii,Arezou-gh/dealii,EGP-CIG-REU/dealii,YongYang86/dealii,YongYang86/dealii