Fix `rf` string-offsetting bug.

src/plfunc.c

@@ -458,7 +458,6 @@ char* readFileToString(FILE* input)
             char* prev = string;
             capacity *= 2;
             string = malloc(sizeof(char) * capacity);
-            string += 1;
             memcpy(string, prev, sizeof(char) * (capacity / 2));
             free(prev);
         }