Fix crashes when trying to evaluate an expression that is value-dependent.
Fix crashes when trying to evaluate an expression that is value-dependent.

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