Hide some comments from -Wdocumentation to shut up warnings

Clang doesn't seem to treat variables of function pointer type as valid
functions (unlike e.g. typedefs of function types), so it was warning
about \param and \returns.  For now, just disable the warning in this
header.  I filed rdar://problem/24978538 to fix clang.

Author: benlangmuir

include/swift/SwiftReflection/MemoryReaderInterface.h

@@ -35,6 +35,10 @@ typedef struct MemoryReaderImpl {
   /// Get the size in bytes of the target's size type.
   uint8_t (*getSizeSize)();
 
+  // FIXME: -Wdocumentation complains about \param and \returns on function pointers.
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdocumentation"
+
   /// Read a sequence of bytes at an address in the target.
   ///
   /// \param address the address in the target address space
@@ -60,6 +64,9 @@ typedef struct MemoryReaderImpl {
   /// \param address the address in the target address space
   /// \returns The length of the string or 0 if the scan was unsuccessful.
   uint64_t (*getStringLength)(addr_t address);
+
+#pragma clang diagnostic pop
+
 } MemoryReaderImpl;
 
 #ifdef __cplusplus