Fix TestDebugBreak.py failure with gcc, for loop declarations are not allowed by default with gcc

- fix buildbot breakage after r257186
- move declaration outside of for loop

llvm-svn: 257228

lldb/packages/Python/lldbsuite/test/functionalities/breakpoint/debugbreak/main.c

@@ -8,8 +8,8 @@
 int
 bar(int const *foo)
 {
-    int count = 0;
-    for (int i = 0; i < 10; ++i)
+    int count = 0, i = 0;
+    for (; i < 10; ++i)
     {
         count += 1;
         BREAKPOINT_INTRINSIC();