Update utils.c

Add compatibility for Windows style text files with #13 #10 end of line (\r\n)

src/utils.c

@@ -356,6 +356,7 @@ char *fgetl(FILE *fp)
         curr = strlen(line);
     }
     if(line[curr-1] == '\n') line[curr-1] = '\0';
+    if(line[curr-1] == '\r') line[curr-1] = '\0';
 
     return line;
 }