Merge pull request #1935 from xzyfer/fix/import-cache

Don't use import resource cache if there are custom importers

Author: xzyfer

src/context.cpp

@@ -351,8 +351,9 @@ namespace Sass {
 
     // process the resolved entry
     else if (resolved.size() == 1) {
+      bool use_cache = c_importers.size() == 0;
       // use cache for the resource loading
-      if (sheets.count(resolved[0].abs_path)) return resolved[0];
+      if (use_cache && sheets.count(resolved[0].abs_path)) return resolved[0];
       // try to read the content of the resolved file entry
       // the memory buffer returned must be freed by us!
       if (char* contents = read_file(resolved[0].abs_path)) {