Fix a bad comparison in single_term(), which fixes all the test_direct tests.
Fix a bad comparison in single_term(), which fixes all the test_direct tests.

pombredanne/dxr,bozzmob/dxr,bozzmob/dxr,jbradberry/dxr,pombredanne/dxr,pelmers/dxr,pelmers/dxr,kleintom/dxr,jbradberry/dxr,kleintom/dxr,pelmers/dxr,pelmers/dxr,pombredanne/dxr,jay-z007/dxr,jbradberry/dxr,jay-z007/dxr,pombredanne/dxr,pombredanne/dxr,bozzmob/dxr,gartung/dxr,pelmers/dxr,bozzmob/dxr,pombredanne/dxr,pelmers/dxr,gartung/dxr,kleintom/dxr,jay-z007/dxr,gartung/dxr,kleintom/dxr,gartung/dxr,gartung/dxr,bozzmob/dxr,kleintom/dxr,jbradberry/dxr,kleintom/dxr,jay-z007/dxr,gartung/dxr,jay-z007/dxr,bozzmob/dxr,pombredanne/dxr,kleintom/dxr,pelmers/dxr,jay-z007/dxr,gartung/dxr,jay-z007/dxr,bozzmob/dxr,jbradberry/dxr,jbradberry/dxr,jbradberry/dxr