Move array usage to a separate function to ensure there is a breakpoint afterwards

Author: kuilpd

lldb/test/Shell/SymbolFile/DWARF/DW_OP_piece-O3.c

@@ -7,7 +7,7 @@
 
 // RUN: %clang_host -O3 -gdwarf %s -o %t
 // RUN: %lldb %t \
-// RUN:   -o "b 22" \
+// RUN:   -o "b 25" \
 // RUN:   -o "r" \
 // RUN:   -o "p/x array[2]" \
 // RUN:   -b | FileCheck %s
@@ -17,7 +17,10 @@
 
 static char array[5] = {0, 1, 2, 3, 4};
 
+void func() __attribute__((noinline));
+void func() { ++array[2]; };
+
 int main(void) {
-  array[2]++;
+  func();
   return 0;
-}
+}