addressing aaron's comment

Author: wonja

functions.cpp

@@ -714,9 +714,11 @@ namespace Sass {
         // it's a multi bit sequence and presumably it's a leading bit
         else {
           ++i; // go to the next byte
+          c = static_cast<unsigned char>(str[i]);
           // see if it's still part of the sequence
-          while (((str[i] & 0b11000000) == 0b10000000) && (i < length_of_s)) {
+          while ((i < length_of_s) && ((c & 0b11000000) == 0b10000000)) {
             ++i;
+            c = static_cast<unsigned char>(str[i]);
           }
           // when it's not [aka a new leading bit], increment and move on
           ++len;