Fixes compile errors generated with -Wpedantic

This patch fixes the compile errors generated when the options
SPIRV_WARN_EVERYTHING and SPIRV_WERROR (that force -Wpedantic) are
set to cmake.
diff --git a/source/opt/inline_pass.cpp b/source/opt/inline_pass.cpp
index d858fd2..61c7343 100644
--- a/source/opt/inline_pass.cpp
+++ b/source/opt/inline_pass.cpp
@@ -668,7 +668,7 @@
     // Compute inlinability
     if (IsInlinableFunction(&fn)) inlinable_.insert(fn.result_id());
   }
-};
+}
 
 InlinePass::InlinePass() {}