[libunwind] Use consistent indentation in __libunwind_config.h

Use consistent indentation patterns all across `__libunwind_config.h`.
The huge number of branches of the preprocessor conditions make them
really unreadable when some of them are not indented.

Signed-off-by: Michał Górny <[email protected]>

Author: mgorny

libunwind/include/__libunwind_config.h

@@ -136,17 +136,16 @@
 #    error "Unsupported MIPS ABI and/or environment"
 #  endif
 #  define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_MIPS
-#elif defined(__sparc__) && defined(__arch64__)
-#define _LIBUNWIND_TARGET_SPARC64 1
-#define _LIBUNWIND_HIGHEST_DWARF_REGISTER                                      \
-  _LIBUNWIND_HIGHEST_DWARF_REGISTER_SPARC64
-#define _LIBUNWIND_CONTEXT_SIZE 33
-#define _LIBUNWIND_CURSOR_SIZE 45
+# elif defined(__sparc__) && defined(__arch64__)
+#  define _LIBUNWIND_TARGET_SPARC64 1
+#  define _LIBUNWIND_HIGHEST_DWARF_REGISTER LIBUNWIND_HIGHEST_DWARF_REGISTER_SPARC64
+#  define _LIBUNWIND_CONTEXT_SIZE 33
+#  define _LIBUNWIND_CURSOR_SIZE 45
 # elif defined(__sparc__)
-  #define _LIBUNWIND_TARGET_SPARC 1
-  #define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_SPARC
-  #define _LIBUNWIND_CONTEXT_SIZE 16
-  #define _LIBUNWIND_CURSOR_SIZE 23
+#  define _LIBUNWIND_TARGET_SPARC 1
+#  define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_SPARC
+#  define _LIBUNWIND_CONTEXT_SIZE 16
+#  define _LIBUNWIND_CURSOR_SIZE 23
 # elif defined(__riscv)
 #  define _LIBUNWIND_TARGET_RISCV 1
 #  if defined(__riscv_flen)
@@ -162,7 +161,7 @@
 #  else
 #   error "Unsupported RISC-V ABI"
 #  endif
-# define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_RISCV
+#  define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_RISCV
 # elif defined(__ve__)
 #  define _LIBUNWIND_TARGET_VE 1
 #  define _LIBUNWIND_CONTEXT_SIZE 67
@@ -173,20 +172,19 @@
 #  define _LIBUNWIND_CONTEXT_SIZE 34
 #  define _LIBUNWIND_CURSOR_SIZE 46
 #  define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_S390X
-#elif defined(__loongarch__)
-#define _LIBUNWIND_TARGET_LOONGARCH 1
-#if __loongarch_grlen == 64
-#define _LIBUNWIND_CONTEXT_SIZE 65
-#define _LIBUNWIND_CURSOR_SIZE 77
-#else
-#error "Unsupported LoongArch ABI"
-#endif
-#define _LIBUNWIND_HIGHEST_DWARF_REGISTER                                      \
-  _LIBUNWIND_HIGHEST_DWARF_REGISTER_LOONGARCH
-#elif defined(__wasm__)
+# elif defined(__loongarch__)
+#  define _LIBUNWIND_TARGET_LOONGARCH 1
+#  if __loongarch_grlen == 64
+#   define _LIBUNWIND_CONTEXT_SIZE 65
+#   define _LIBUNWIND_CURSOR_SIZE 77
+#  else
+#   error "Unsupported LoongArch ABI"
+#  endif
+#  define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_LOONGARCH
+# elif defined(__wasm__)
 // Unused
-#define _LIBUNWIND_CONTEXT_SIZE 0
-#define _LIBUNWIND_CURSOR_SIZE 0
+#  define _LIBUNWIND_CONTEXT_SIZE 0
+#  define _LIBUNWIND_CURSOR_SIZE 0
 # else
 #  error "Unsupported architecture."
 # endif