[OpenJDK 2D-Dev] RFR(S): 8161923: Fix two memory issues.

[Lindenmaier, Goetz]

Hi

This changes fixes two memory issues.

In awt_PrintControl.cpp, a wrong pointer is freed.

In LigatureSubstProc2.cpp, line 157:
    stack[++mm] = componentGlyph;
can overwrite the stack by one element. It will write
stack[nComponents], because ++mm increments before
accessing the array.

Fix: increase the size of the array by one.

Please review this change:
http://cr.openjdk.java.net/~goetz/wr16/8161923-jdkMem/webrev.01/

Best regards,
  Goetz.
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