[PATCH] Silence the implicit signed/unsigned conversion warning.

[Nico Weber]

Thanks!

================
Comment at: src/Unwind/Unwind-EHABI.cpp:110
@@ -108,3 +109,3 @@
     // Clear off flag from last bit.
-    length &= ~1;
-    offset &= ~1;
+    length &= ~(uint32_t)0x1;
+    offset &= ~(uint32_t)0x1;
----------------
No need for the 0x

Also, since we know this is always 32bit code, you can just write ~1u (everywhere)

================
Comment at: src/Unwind/Unwind-EHABI.cpp:213
@@ -211,3 +212,3 @@
 uint32_t RegisterRange(uint8_t start, uint8_t count_minus_one) {
-  return (start << 16) | (count_minus_one + 1);
+  return ((uint32_t)start << 16) | ((uint32_t)count_minus_one + 1);
 }
----------------
Huh, your compiler warns when widening a unsigned byte to an unsigned int? Interesting.

http://reviews.llvm.org/D4315