Don't bomb on missing pdftotext

Author: MeirKriheli

simple/management/commands/parse_government_bill_pdf/pdftools.py

@@ -36,6 +36,8 @@ def local_or_system(toolname):
 PDFINFO=local_or_system('pdfinfo')
 
 def pdftotext_version():
+    if not PDFTOTEXT:
+        return ('0', '0', '0')
     p = subprocess.Popen(executable=PDFTOTEXT, args=[PDFTOTEXT, '-v'], stderr=subprocess.PIPE, stdout=subprocess.PIPE)
     major, minor, patchlevel = map(lambda x,y:y if x is None else x,p.stderr.readlines()[0].strip().split()[-1].split('.'),[0]*3)
     p.kill()