Remove semicolons at the end of macros after `do {} while (0)` (#1605)

Summary:
The semicolons at the end of macros after `do {} while (0)` is useless and may cause potential compile errors in the future.

Pull Request resolved: https://github.com/facebook/folly/pull/1605

Reviewed By: Mizuchi

Differential Revision: D29109549

Pulled By: yfeldblum

fbshipit-source-id: 0c585b2db059bc5f53a31671b044a2b86a707359

folly/FBVector.h

@@ -63,7 +63,7 @@ class fbvector;
     }                                             \
     for (; (first) != (last); ++(first))          \
       OP((first));                                \
-  } while (0);
+  } while (0)
 
 //=============================================================================
 ///////////////////////////////////////////////////////////////////////////////
@@ -376,7 +376,7 @@ class fbvector {
       //  version is about 0.5% slower on size 262144.
 
       // for (; first != last; ++first) first->~T();
-      FOLLY_FBV_UNROLL_PTR(first, last, FOLLY_FBV_OP)
+      FOLLY_FBV_UNROLL_PTR(first, last, FOLLY_FBV_OP);
 #undef FOLLY_FBV_OP
     }
   }

folly/futures/test/FutureTest.cpp

@@ -332,13 +332,13 @@ TEST(Future, thenError) {
   do {                    \
     EXPECT_TRUE(theFlag); \
     theFlag = false;      \
-  } while (0);
+  } while (0)
 
 #define EXPECT_NO_FLAG()   \
   do {                     \
     EXPECT_FALSE(theFlag); \
     theFlag = false;       \
-  } while (0);
+  } while (0)
 
   // By reference
   {

folly/futures/test/SemiFutureTest.cpp

@@ -727,13 +727,13 @@ TEST(SemiFuture, onError) {
   do {                    \
     EXPECT_TRUE(theFlag); \
     theFlag = false;      \
-  } while (0);
+  } while (0)
 
 #define EXPECT_NO_FLAG()   \
   do {                     \
     EXPECT_FALSE(theFlag); \
     theFlag = false;       \
-  } while (0);
+  } while (0)
 
   // By reference
   {