[streambuf.virt.buffer,stringbuf.general] Fix indentation

Author: Andreas-Krug

source/iostreams.tex

@@ -3636,7 +3636,7 @@
 \begin{itemdecl}
 pos_type seekoff(off_type off, ios_base::seekdir way,
                  ios_base::openmode which
-                  = ios_base::in | ios_base::out);
+                   = ios_base::in | ios_base::out);
 \end{itemdecl}
 
 \begin{itemdescr}
@@ -3658,7 +3658,7 @@
 \begin{itemdecl}
 pos_type seekpos(pos_type sp,
                  ios_base::openmode which
-                  = ios_base::in | ios_base::out);
+                   = ios_base::in | ios_base::out);
 \end{itemdecl}
 
 \begin{itemdescr}
@@ -8095,10 +8095,10 @@
 
     pos_type seekoff(off_type off, ios_base::seekdir way,
                      ios_base::openmode which
-                      = ios_base::in | ios_base::out) override;
+                       = ios_base::in | ios_base::out) override;
     pos_type seekpos(pos_type sp,
                      ios_base::openmode which
-                      = ios_base::in | ios_base::out) override;
+                       = ios_base::in | ios_base::out) override;
 
   private:
     ios_base::openmode @\exposid{mode}@;                        // \expos