fixed spacing

Author: grdanny

pystring_impl.h

@@ -940,9 +940,9 @@ const std::string colon = ":";
         int nummatches = 0;
         int cursor = start;
 
-	// special handling for an empty substring
-	// this will match python's behavior of
-	// "bob".count("") == 4
+        // special handling for an empty substring
+        // this will match python's behavior of
+        // "bob".count("") == 4
         // "".count("") == 1
         if ( substr.empty() )
         {