Fix depfiles only outputting half of the dependencies

Jesus christ what is this slip up even lmao

Author: mid-kid

patch/depfile_build.c

@@ -305,8 +305,6 @@ __cdecl void depfile_build(char *header_struct, char *depfile_struct, mwstring *
 
     // Print all header dependencies
     for (int cur_header = 0; cur_header < num_headers; cur_header++) {
-        num_headers--;
-
         mwpath header;
         char header_full[PATH_MAX];
 
@@ -341,7 +339,8 @@ __cdecl void depfile_build(char *header_struct, char *depfile_struct, mwstring *
         char *header_escaped = depfile_escape_spaces(
             strchr(header_full, ' ') != NULL, escape_buf, header_full);
 
-        sprintf(strbuf, "\t%s %s\n", header_escaped, num_headers ? "\\" : "");
+        sprintf(strbuf, "\t%s %s\n", header_escaped,
+            (cur_header < num_headers - 1) ? "\\" : "");
         if (string_append(string, strbuf, strlen(strbuf))) goto outofmem;
     }
     return;

test/deps.d

@@ -15,3 +15,19 @@ deps.o: deps.c \
 	inc/deps14.h \
 	inc/deps15.h \
 	inc/deps16.h \
+	inc/deps17.h \
+	inc/deps18.h \
+	inc/deps19.h \
+	inc/deps20.h \
+	inc/deps21.h \
+	inc/deps22.h \
+	inc/deps23.h \
+	inc/deps24.h \
+	inc/deps25.h \
+	inc/deps26.h \
+	inc/deps27.h \
+	inc/deps28.h \
+	inc/deps29.h \
+	inc/deps30.h \
+	inc/deps31.h \
+	inc/deps32.h