glsl: resolve extern C workarounds/hacks

Do not wrap header inclusion in extern C since it can cause issues.

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

src/compiler/glsl/blob.h

@@ -25,14 +25,14 @@
 #ifndef BLOB_H
 #define BLOB_H
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* The blob functions implement a simple, low-level API for serializing and
  * deserializing.
  *

src/compiler/glsl/glsl_symbol_table.h

@@ -28,9 +28,7 @@
 
 #include <new>
 
-extern "C" {
 #include "program/symbol_table.h"
-}
 #include "ir.h"
 
 class symbol_table_entry;

src/compiler/glsl/ir_print_visitor.h

@@ -29,9 +29,7 @@
 #include "ir.h"
 #include "ir_visitor.h"
 
-extern "C" {
 #include "program/symbol_table.h"
-}
 
 /**
  * Abstract base class of visitors of IR instruction trees