apibuild: Use list comprehension insteand of map

Reviewed-by: NDaniel P. Berrangé <berrange@redhat.com>
Signed-off-by: NRadostin Stoyanov <rstoyanov1@gmail.com>

docs/apibuild.py

@@ -471,8 +471,7 @@ class CLexer:
                 return None
 
             if line[0] == '#':
-                self.tokens = list(map((lambda x: ('preproc', x)),
-                                       line.split()))
+                self.tokens = [('preproc', word) for word in line.split()]
 
                 # We might have whitespace between the '#' and preproc
                 # macro name, so instead of having a single token element