tree-wide: make ++/-- usage consistent WRT spacing

Throughout the tree there's spurious use of spaces separating ++ and --
operators from their respective operands.  Make ++ and -- operator
consistent with the majority of existing uses; discard the spaces.

src/shared/bus-util.c

@@ -1412,7 +1412,7 @@ int bus_append_unit_property_assignment(sd_bus_message *m, const char *assignmen
                 return bus_log_create_error(r);
 
         field = strndupa(assignment, eq - assignment);
-        eq ++;
+        eq++;
 
         if (streq(field, "CPUQuota")) {