make printInstruction return void since its result is omitted.  Make the 
error condition get trapped with an assert.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78449 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp b/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
index 8a0c767..9884ca3 100644
--- a/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
+++ b/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
@@ -116,7 +116,7 @@
     /// from the instruction set description.  This method returns true if the
     /// machine instruction was sufficiently described to print it, otherwise it
     /// returns false.
-    bool printInstruction(const MachineInstr *MI);
+    void printInstruction(const MachineInstr *MI);
 
     void printMachineInstruction(const MachineInstr *MI);
     void printOp(const MachineOperand &MO);