Fix NAPI_SYMBOL name substitution in message

Change-Id: I620427b9adcb27f0682125490dcb3d33f55cc895
Bug: dawn:1975
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/146741
Kokoro: Kokoro <[email protected]>
Reviewed-by: Ben Clayton <[email protected]>
Commit-Queue: Ben Clayton <[email protected]>

Author: sparist

src/dawn/node/NapiSymbols.cpp

@@ -26,11 +26,11 @@
 #endif
 
 #ifdef __clang__
-#define NAPI_SYMBOL(NAME)                                                              \
-    __attribute__((weak)) void NAME() {                                                \
-        UNREACHABLE(                                                                   \
-            "#NAME is a weak stub, and should have been runtime replaced by the node " \
-            "implementation");                                                         \
+#define NAPI_SYMBOL(NAME)                                                    \
+    __attribute__((weak)) void NAME() {                                      \
+        UNREACHABLE(#NAME                                                    \
+                    " is a weak stub, and should have been runtime replaced" \
+                    " by the node implementation");                          \
     }
 #else
 #define NAPI_SYMBOL(NAME)