misc: replace #ifdef\s\s__cplusplus with #ifdef\s__cplusplus

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15762>

src/gallium/auxiliary/os/os_mman.h

@@ -45,7 +45,7 @@
 #  error Unsupported OS
 #endif
 
-#ifdef  __cplusplus
+#ifdef __cplusplus
 extern "C" {
 #endif
 

src/gallium/auxiliary/util/u_trace_gallium.c

@@ -29,7 +29,7 @@
 
 #include "u_tracepoints.h"
 
-#ifdef  __cplusplus
+#ifdef __cplusplus
 extern "C" {
 #endif
 
@@ -91,6 +91,6 @@ trace_framebuffer_state(struct u_trace *ut, void *cs, const struct pipe_framebuf
    }
 }
 
-#ifdef  __cplusplus
+#ifdef __cplusplus
 }
 #endif

src/gallium/auxiliary/util/u_trace_gallium.h

@@ -26,7 +26,7 @@
 
 #include "util/perf/u_trace.h"
 
-#ifdef  __cplusplus
+#ifdef __cplusplus
 extern "C" {
 #endif
 
@@ -50,7 +50,7 @@ u_trace_pipe_context_init(struct u_trace_context *utctx,
 void
 trace_framebuffer_state(struct u_trace *ut, void *cs, const struct pipe_framebuffer_state *pfb);
 
-#ifdef  __cplusplus
+#ifdef __cplusplus
 }
 #endif
 

src/util/os_file.h

@@ -11,7 +11,7 @@
 #include <stdbool.h>
 #include <stdio.h>
 
-#ifdef  __cplusplus
+#ifdef __cplusplus
 extern "C" {
 #endif
 

src/util/os_misc.h

@@ -46,7 +46,7 @@
 #endif
 
 
-#ifdef  __cplusplus
+#ifdef __cplusplus
 extern "C" {
 #endif
 

src/util/perf/u_trace.h

@@ -30,7 +30,7 @@
 
 #include "util/u_queue.h"
 
-#ifdef  __cplusplus
+#ifdef __cplusplus
 extern "C" {
 #endif
 
@@ -294,7 +294,7 @@ u_trace_context_instrumenting(struct u_trace_context *utctx)
    return !!utctx->out || ut_trace_instrument || (ut_perfetto_enabled > 0);
 }
 
-#ifdef  __cplusplus
+#ifdef __cplusplus
 }
 #endif
 

src/util/perf/u_trace.py

@@ -189,7 +189,7 @@ struct trace_${trace_name} {
    ${arg.type} ${arg.name};
 %    endfor
 %    if len(trace.args) == 0:
-#ifdef  __cplusplus
+#ifdef __cplusplus
    /* avoid warnings about empty struct size mis-match in C vs C++..
     * the size mis-match is harmless because (a) nothing will deref
     * the empty struct, and (b) the code that cares about allocating