Fix style in buglink htmlifier.
Fix style in buglink htmlifier.

Declare all globals explicitly. PEP 8 stuff.

jay-z007/dxr,erikrose/dxr,gartung/dxr,kleintom/dxr,pelmers/dxr,gartung/dxr,srenatus/dxr,jbradberry/dxr,jbradberry/dxr,gartung/dxr,pelmers/dxr,pelmers/dxr,jbradberry/dxr,jay-z007/dxr,jbradberry/dxr,jay-z007/dxr,bozzmob/dxr,kleintom/dxr,KiemVM/Mozilla--dxr,pombredanne/dxr,bozzmob/dxr,pombredanne/dxr,KiemVM/Mozilla--dxr,bozzmob/dxr,pombredanne/dxr,KiemVM/Mozilla--dxr,KiemVM/Mozilla--dxr,kleintom/dxr,bozzmob/dxr,kleintom/dxr,nrc/dxr,srenatus/dxr,jay-z007/dxr,pelmers/dxr,bozzmob/dxr,bozzmob/dxr,jbradberry/dxr,pombredanne/dxr,erikrose/dxr,pombredanne/dxr,nrc/dxr,srenatus/dxr,gartung/dxr,jay-z007/dxr,srenatus/dxr,jbradberry/dxr,gartung/dxr,pombredanne/dxr,jay-z007/dxr,kleintom/dxr,KiemVM/Mozilla--dxr,nrc/dxr,kleintom/dxr,srenatus/dxr,gartung/dxr,pelmers/dxr,gartung/dxr,erikrose/dxr,jay-z007/dxr,nrc/dxr,kleintom/dxr,pelmers/dxr,srenatus/dxr,KiemVM/Mozilla--dxr,pelmers/dxr,bozzmob/dxr,erikrose/dxr,jbradberry/dxr,nrc/dxr,erikrose/dxr,nrc/dxr,pombredanne/dxr