Fix a problem with the const_variables test case (another lldb bug remains)

- make the test case step past the location where 'index' is initialized, otherwise its value cannot be printed (verified gcc 4.6/4.7 and recent clang)
- "Couldn't materialize struct" error from LLDB still prevents this test case from passing

llvm-svn: 175653

lldb/test/lang/c/const_variables/TestConstVariables.py

@@ -45,6 +45,8 @@ class ConstVariableTestCase(TestBase):
         self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE,
             substrs = [' resolved, hit count = 1'])
 
+        self.runCmd("next")
+
         # Try frame variable.
         self.expect("frame variable index", VARIABLES_DISPLAYED_CORRECTLY,
             substrs = ['(int32_t) index = 512'])